Girls life & Sexual past

Have just found out girl we are trying things to make work had estimated 18 partners that she says since age 19 to 23, (17 to 19) was with a guyy, onyl thing makes it super hard is she is pregnat and she has come from russia to live with me. she is ex stripper and is 24 years old. has never gotten an orgams in her life, i think is because of her sexual past, and promiscuity and i think won't ever have chance to a normal relation. How can i let this go, already found out lot of things that i could have let past, but not this. Is just too much. We had a one night stand then she went to russia and was pregnat , now she is here, things seem to be working after passing things i found out that she fucked with her ex before coming here since we were not together. She has gotten fingered by a 40 yr old man from the strip club she worked in, and made her squirt and things like this she tells me. Now she is pregnat and all seems to be working but how can i be with her, i only wanted child to have parents together, but i know this is too much for me to take. She says she doesn't remember too much of that time in her life and seem to really affect her when I asked about how many partners etc. She is super super hot girl, model , yoga type, but i dont think i can manage this , even with baby coming she is 5 months pregnant and we are together now for bit less than 2 months. Lately was working but her past always comes back. Im really messed up now cause i was gettin emotionally involved not only with her but with baby coming, spending time with her rubbing her belly going to ecos etc. What should i do to pass this, I already passed a lot of things lik the stripping, the being with the ex before she came when she travelled to thailand and finding out they still talk etc. I wanted to do a dna test but now i dont even feel if its mine it will work out. Any help is welcomed!