1. Segulos for getting pregnant and having children:[1]

Consulting with a physician and receiving medical treatment:[2] In addition to all of the below Segulos, a couple who is having difficulty in  getting pregnant and having children should seek expert medical advice in this field [i.e. reproductive endocrinologists, otherwise known as fertility doctors, who specialize in infertility].

The Segulos: There are several Segulos recorded in Chazal and Sefarim for the bearing of children. The following are some of the Segulos that are recorded:

1. Praying to G-d:[3] One who is having difficulty getting pregnant and having children is to pray to G-d and beseech Him to grant one a child.
2. Trust in G-d:[4] Having faith and trust in G-d that one will merit to have a child is a Segula for getting pregnant and having children. Even one who asked his Rebbe, or Tzaddik for a blessing and received a positive blessing for children, must not forget G-d who is the source of all blessing and is the one who actually gives the child. Trusting only in a man of flesh and blood, including even a Tzaddik, can G-d forbid lead to a miscarriage of the fetus with which the Tzaddik blessed the couple.[5]
3. Psalm of Mizmor Ledavid Hashem Roiy:[6] Saying the Psalm of Mizmor Ledavid Hashem Roiy [Tehillim 23] prior to marital relations is a Segula for having children.
4. Do the will of G-d and the will of one’s wife:[7] One who desires children is to do the will of G-d and the will of his wife. He is to do the will of G-d by dispersing charity and do the will of his wife by rejoicing with her during intimacy.
5. Add in Torah and Mitzvos:[8] Adding in the fulfillment of Torah and Mitzvos is a Segula for getting pregnant and having children.
6. Taharas Hamishpacha:[9]  Being careful to guard all the detailed laws of Taharas Hamishpacha is a Segula for getting pregnant and having children, as at times the blessing of G-d for having children is obstructed due to lack of observance of Taharas Hamishpacha. This includes being well learned in all the laws of Nida, Hefsek Taharah, Tevila in a Kosher mikvah, and properly observing these detailed laws. If necessary, one should speak with a Rav for the details of these subjects. One should be careful in these matters not just prior to becoming pregnant but always, even after birth.[10] If the husband or wife expresses strong regret about the keeping of the laws of family purity after she already became pregnant, this can G-d forbid cause a miscarriage. Accordingly, one is not to express regret of this matter.[11]
7. Covering the hair:[12] Having the wife be careful to properly cover her hair, is a Segula for getting pregnant and having children.
8. Tzenius:[13] Being extra careful in the laws of Tzenius is a Segula for getting pregnant and having children.
9. Checking the Tefillin and Mezuzos:[14] Checking the Tefillin and Mezuzos to verify that they are 100% Kosher is a Segula for getting pregnant and having children.
10. Charity:[15] Distributing charity is a Segula for getting pregnant and having children. Charity should be distributed by the wife prior to prayer on every Monday and Thursday, and prior to candle lighting on every Erev Shabbos and Erev Yom Tov. It should be distributed to an institution in the field of Torah education. 
11. Studying and spreading Chassidus:[16] Learning Toras Hachassidus and spreading its teachings is a Segula for getting pregnant and having children. One should not pass three days without learning Chassidus.
12. Spreading Judaism:[17] Spreading Judaism and strengthening its observance is a Segula for getting pregnant and having children.
13. Working in Torah education: Working in the field of Torah education is a Segula for getting pregnant and having children.
14. Teaching Torah to others:[18] Teaching Torah to other people is a great Segula for getting pregnant and having children.
15. Being involved in love of a fellow Jew:[19] Being involved in activities that express love for a fellow Jew is a Segula for getting pregnant and having children.
16. Hachanasas Orchim:[20] Fulfilling the Mitzvah of Hachanasas Orchim by feeding guests and the poor, is a Segula for getting pregnant and having children.
17. Becoming expert in a Misechta of Shas:[21] If one is not a Kohen and is married to the daughter of a Kohen then it is proper for him to become an expert in at least one tractate of Shas. It suffices to be well versed even in a small Misechta, such as Miseches Kallah. Doing so is a Segula for getting pregnant and having children.
18. To move to Israel:[22] Making Aliyah to the land of Israel is a Segula for getting pregnant and having children.
19. Not to express regret of the pregnancy:[23] If the husband or wife expresses strong regret about the pregnancy after she already became pregnant, this can G-d forbid cause a miscarriage. Accordingly, one is not to express regret of the pregnancy.
20. Avoiding making an oath and swear:[24] One who is having difficulty having children should especially be careful not to take an oath or swear even about a truthful matter. Certainly, they should not swear by the life of someone.
21. Make a Shidduch:[25] Being involved in the making of a Shidduch for a couple is a Segula for getting pregnant and having children.
22. Forgiveness from past Shidduch:[26] A couple who is having difficulty in getting pregnant and having children should contemplate if during Shidduchim the husband or wife offended someone in a way that requires them to ask for their forgiveness, and if so then they should ask for their forgiveness whether in front of them or not in front of them.
23. Segula to prevent miscarriage-Not publicizing the pregnancy:[27] A woman who has a history of miscarriage should be especially careful not to publicize her pregnancy until the fifth month with exception to close relatives.
24. Segula to prevent miscarriage-Avoid heavy items and overexertion:[28] Certainly, a woman who has a history of miscarriages should avoid lifting heavy items, and overexerting herself with extra strenuous activity.

A further list of Segulos recorded in other rare Sefarim [not mentioned by the Rebbe or classic sources]:[29]

*Some of the below Segulos are not recommended to be performed without consultation with a Rabbi.

1. Mikveh on Motzei Shabbos:[30] Immersing in a Mikveh on Saturday night, making sure to be escorted by two women to the Mikveh is a traditional Segula handed down from righteous women for having children.
2. Kamia:[31] She is to have the Roshei Teivos of the verse of Torah Tziva Lanu Moshe Morasha Kehilas Yaakov written on parchment, and read the verse from it 26 times for the first three nights after Mikvah.
3. Vapor of lamb lung:[32] Cook the lung and liver of a lamb in expensive wine and when it reaches a boil remove it from the fire and have its vapor enter her body until its heat has dissipated. She should then have intimacy in a warm home.
4. Be happy: Being joyful and happy is a Segula for having children.
5. Charity: Distribute charity to the poor on the night of Mikvah.
6. Meat and olive oil: Eating animal meat and drinking olive oil is a Segula for having children.
7. Mila knife: Looking at the night of the Mila after the bris is a Segula for having children.
8. Magnetic stone: Wearing a necklace with a magnetic stone is a Segula for having children.
9. Wood from grave of a Tzaddik: Wearing a necklace with a piece of wood from the grave of a Tzaddik is a Segula for having children

Swallowing the foreskin:[33]

There are barren women who are accustomed to swallow the circumcised foreskin after dipping it honey as a Segula for having children.[34] The Poskim[35], however, vehemently opposed this custom and it is to be abolished.

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[1] See Shulchan Menachem 6:5; Bayis Hayehbudi p. 487; Sefer Segulas Avraham Erech Banim and Akara for a compilation of tens of Segulos from various Sefarim

[2] Igros Kodesh 8:282; 11:278; 13:383; 18:32; Mikdash Melech 3:251

[3] Igros Kodesh 14:383

[4] Igros Kodesh 11:278; 13:185, 14:107, brought in Shulchan Menachem 5:21

[5] Igros Kodesh 29:30

[6] Siddur Admur; Peri Eitz Chaim Shaar Kerias Shema Sheal Hamita 11; Or Tzadikim 27:20; Siddur Yaavetz Mosach Hashabbos Mitos Kesef Chulya Gimel 7:23; Kaf Hachaim 240:65

[7] Miseches Kallah, brought in Tur 240; Bava Basra 10b

[8] Igros Kodesh 14:383

[9] Likkutei Sichos 11:126; 12:178; 22:299; Igros Kodesh 11:278; 14:383; 27:427; 28:133; 29:30

[10] Igros Kodesh 28:133

[11] Igros Kodesh 29:30

[12] Igros Kodesh 7:259; 13:210; Yuma 47a; Zohar Parshas Nasso p. 239 “one who is careful in this merits to have illustrious children, and have her husband be blessed with all blessings of above and below, with wealth and grandchildren”, brought in M”A 75:4; Maharam Alshiker 35; Chasam Sofer ibid; M”B 75:14

[13] Igros Kodesh 7:259; 14:383; Yuma 47a; Zohar Parshas Nasso p. 239 “one who is careful in this merits to have illustrious children, and have her husband be blessed with all blessings of above and below, with wealth and grandchildren”, brought in M”A 75:4; Maharam Alshiker 35; Chasam Sofer ibid; M”B 75:14

[14] Likkutei Sichos 12:178; Igros Kodesh 7:259; 11:126; 13:185; 14:383; 18:32; 27:427; Mikdash Melech 3:251

[15] Igros Kodesh 13:185; 14:383; 18:32

[16] Letter of Alter Rebbe, printed in Meiah Shearim 2:32 and Ginzei Nistaros 3:61; Igros Kodesh 5:185; 14:340; Mikdash Melech 3:251

[17] Igros Kodesh 8:282; 14:401

[18] Igros Kodesh 15:389

[19] Igros Kodesh 11:126

[20] Igros Kodesh 19:333

[21] Igros Kodesh 14:383; See Michaber E.H. 2:8; Admur 444:15; Rambam Issurei Biya 21; Rebbe Yochanon Pesachim 49a; Tzemach Tzedek Even Haezer 11; Otzer Haposkim 1:2-8:44; See Shulchan Menachem E.H. 6:247

[22] Likkutei Sichos 22:299; See Yevamos 64a

[23] Igros Kodesh 29:30

[24] Igros Kodesh 11:126

[25] Igros Umaanos Michtav 15, brought in Shulchan Menachem 5:25

[26] Igros Kodesh 11:126; 18:32

[27] Igros Kodesh 11:278

[28] Igros Kodesh 11:278

[29] See Sefer Segulas Avraham Erech Akara for many more interesting [and strange] Segulos that we did not list here for one reason or another

[30] Chupas Chasanim 4

[31] Heach Nafsheinu Mareches Ayin

[32] Devek Miach; Toldos Adam; Regel Yeshara

[33] See Kaf Hachaim Y.D. 79:12; Or Torah Vol. 398:38

[34] Sefer Mareh Hayeladim Mareches Hei Os 10; Yifei Mareh p. 240; Custom recorded and negated in all Poskim brought in next footnote

The reason for its allowance: As some Poskim rule that there is no prohibition against eating human flesh. [Setimas Michaber and Tur; Raavad Machalos Assuros 2:3; Ran Kesubos 24b; Ramban Vayikra 11:3 and Chidushim Kesubos 60b; Rashba Teshuvah 1:364, 3:257 and Chidushim Kesubos 60b; Implication of Tosafus Kesubos 60a; Rosh Kesubos 5:19, although is Rabbinically forbidden to cut off body and eat in his opinion; See Taz Y.D. 79:3 in opinion of Rosh; Peri Chadash 79:6 in opinion of Michaber and Tur who omitted the prohibition, and so is his conclusion Lehalacha; See Rashbash ibid] See Machaneh Yisrael 84

[35] Shulchan Gavoa 79:7; Machaneh Yisrael 84; Rashbash 518; Machazik Bracha 79:2; Zivcheiy Tzedek 79:15; Darkei Teshuvah 79:15; Ben Ish Chaiy Emor 2:5; Kaf Hachaim 79:12; Sova Semachos [Y. Yosef] 2:8 footnote 15; 60:15; Otzer Habris Shaar 3 chapter 3:13; Sefer Rafael Hamalach; Or Torah Vol. 398:38

The reason: As a) One is required to bury the Arla in earth. [Michaber Y.D. 260:10; Tur 265; Beis Yosef 265; Pirkeiy Derebbe Eliezer 29; Targum Yonason Bamidbar 23:10; Baal Haturim Bamidbar 23:10; Zohar Lech Lecha 91a; Yireim 402; Hagahos Maimanos Mila 3:5; Rikanti 599; Rokeiach; Ittur; Hamanhig; Or Zarua; Abudarham; Rashal Yevamos 8:4; Levush 265; Shelah Chulin 91 in name of Tolas Yaakov; Tzeror Hamor Lech Lecha and Ki Seitzei; Hagahos  Maharash Vital Shaar Mamarei Chazal Shabbos 2; Sefer Bnei David Tazria 9; Nehar Afarsamon O.C. 27; Otzer Habris 3:15-22; Pesakim Uteshuvos 265:25] b) Some Poskim rule that it is Biblically forbidden to eat human flesh. [Rama 79:1; Darkei Moshe 79:2; Bach 79; Rambam Machalos Assuros 2:3; Maggid Mishneh on Rambazm ibid; Ritva Kesubos 60a; Ran Kesubos 60a; Reah, brought in Shita Mekubetzes Kesubos 60b [transgresses Biblical negative command]; Taz Y.D. 79:3; Shach Y.D. 81:3; Kneses Hagedola 79:5; Lechem Chamudos 79:1; Erech Hashulchan 79:1; Peri Toar 79:3; Karban Aron Shemini; Ben Ish Chaiy Emor 2:5; Kaf Hachaim Y.D. 79:9; and 12; Halichos Olam 6:221; Malbim Vayikra 11:4]