Sex Question

So question out of curiosity. On the 17th of this month my husband and i had unprotected sex. I was in my fertile window. Not sure if I am pregnant ( we just started trying). Husband wanted to have sex last night and I turned him down cause I was worried if I was pregnant any rough sex may cause my egg to unstick and maybe loose the baby if there was one. Would any rough sex cause this to happen? We dont swing from chandeliers or anything just rough pound it sex..Is it possible? Sorry dumb question but he will ask again today and I don't want to have to turn him down cause I'm worried lol. Thanks everyone!!