Internal examinations:[1]

In general, the standard internal examinations done during pregnancy are medically unnecessary and are only done for reasons of extra precaution. Accordingly, one should abstain from doing such examinations, without offending the feelings of their doctor, unless there is an actual medical necessity. This only applies during the actual pregnancy, however before and after the pregnancy there is no need to abstain from having an internal examination performed.[2] Regarding the Nida laws applicable upon having an internal exam, see Chapter 3!

[1] Igros Kodesh 11:66, 164; 15:165

[2] Igros Kodesh 11:66