Matters to be careful in to protect woman during childbirth

Matters to be careful in to protect woman during childbirth r”l:[1]

The following matters are a source of protection for a woman during childbirth:

Being careful in the laws of Nidah.
Being careful in Hafrashas Challah. [Some women are accustomed to separating Challah in the ninth month as a Segula for an easy birth.[2]]
Being careful in lighting the Shabbos candles.
Rav Acha adds that properly guarding Shabbos and not washing the dirt off of their children’s clothing on Shabbos.[3]
Not transgressing a vow.[4]

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[1] Shabbos 31b; Brachos 31b; See Divrei Malkiel 2:94; Sefer Shemiras Haguf Vihanefesh [Lerner] 144:1; 262:1; Shevach Habris 1:2

[2] Nitei Gavriel 56:13

[3] Shabbos 32a

[4] Shabbos 32b

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