I was a mess when it came to sex when i was preggo w/my daughter and my hubby was too. Hes well indowed and it scared me because he def hits everywhere inside...my drs said it was perfectly fine...we also had issues with feeling like we were doing it in the presence of our kid...but by the time i was about 4-5 months we got over it...although i alwsys thought about her afterwards cuz she would be movin all over the place and kicking...i guess from me moving and my heart rate going up. your perfectly normal to have those concerns :)
That doesn't sound stupid but something expecting mommies worry about. I wondered about that & asked my Dr & she said that's very unlikely. Hope that helps!
I personally have never heard of miscarriage from sex. I know my bf & I had sex & he was a bit eager to get "it" in, I ended up having a bit of spotting since it had been over a week & my cervix is sensitive. So spotting is posdible after rough sex but I think, imo, that he wouldn't be able to pierce the cervix to get to the womb. If he cant get to the womb, I don't see how.he could harm the baby. I have heard of women falling belly first onto a curb & still not "rough" enough to do damage (if u get the comparison ;-)