I was in a similar situation. Being raised soley by my father I was subject to sexual abuse. Only 4 people in this world know. My d**k of a father, me, my DH, and my OB/GYN.
My OB said my loss had nothing to do with sexual abuse as a young girl as there was no deep apparent scarring on my tissues of my vagina and uterus.
If you're worried about it (and apparently you are) talk to your OB/GYN and have them do an internal scope exam and maybe a biopsy to chek for scarred tissue.

's honey. I had to think about that to when we were TTC for the first time.