Vaginal Pain During Pregnancy

So my sisters friend is 19 and she is 16 wks pregnant. She said she has been having pain in her vaginal but not inside, its between her vaginal and her butthole is what she told me. She hasnt had any odor or discharge, claims to be having normal BM, and hasnt been constipated. Being I have never been pregnant I told her Im sure its normal her body is going thru alot of changes right now, but to mention it at her next appt. She said its not all the time and sometimes its just if she moves a certain way. Does anyone know if this is normal? Or have any input?
Thanks and sorry if TMI

[kaprovea]

It could be the baby pushing on that area.

[hopeitworks]

Thanks! Of course that could very well be a obvious answer!! LOL
Did I think of that? NO!!! :)