Anyone else? Love making

Anyone else get nervous that you might harm the baby with love makin'? I never was early on, but now that I'm in my third trimester, and very large, I always feel like just my stomach will squish her when I'm on top!! Or maybe I won't realize how soft my cervix is, or that it's dialated and he'll get inside there or something!! Just sort of freaky. With more pationate sex I suppose, not just slow n steady.  Am I alone in this fear? 
36 weeks right now