SO, sex.

My SO won't have sex with me? I'm 35 weeks pregnant, and he said since I've gotten pregnant, my vagina looks different, which I agree, it looks like all the fat went to it, but I don't think that's a good reason to not have sex with me? I've asked if that's really the reason, and if it's not he can tell me, I don't know what to do, it's really making me feel insecure. I can't make someone have sex with me, so I stopped trying, I don't want to make anyone feel uncomfortable, i just don't know what to do :(