am I wasting my time?

I don’t usually share personal issues but I really need advice on this one. Here I go! I’ve been with my baby daddy for two years now, we have a 1 year old together. When we were dating I was very confident and had a nice body, but now i feel insecure about my post pregnancy body. Some girls snap back and some girls bodies change significantly, I was one of those girls. Now my chest isn’t so perky, I have a bit of a mommy pouch now too. My partner doesn’t want have sex, he only wants me to perform oral sex to him only! I don’t know what to thing or how to feel, I’m filled with mix emotions. Beside the fact of having relationship and sex issues he also doesn’t like me visiting my family, doesn’t want me to work or got back to school. We were supposed to separate before our child was born but he convinced me to stay to work it out every since I’ve been treated this way. What do I do? Please any advice would be greatly appreciated.