Is something wrong with me?

Some background: I'm 22 years old, a little over a year I had a baby with my fiance who's 23. I haven't lost the weight but in fact, I've put a lot of due to stress and developing a binging problem and intimacy has been so hard because I never feel sexy or good about myself. We were at one point having sex on average 5 times in a month but I've gotten to a point the last 2 weeks where I have no drive at all.

Lately he's been telling me that even though I don't want sex he'd still like to please me and I decline every time because I'm not in the mood. He says something along the lines of "I just don't understand how you wouldn't want something like that, you just lay back and enjoy. You don't have to put in any effort." And I tell him it's not enjoyable for me if I'm not in the mood or if I'm not mentally and emotionally in a mindset for it. It's night 2 of drinking because I just wanna loosen up a bit, I've been stressed and when I drink I'm more likely to say yes to sex but lately it's not the case but I feel like he pushes for it still. Idk what to do about all this or how to express the way him being so present makes me feel. It doesn't make me want to have sex, it does the opposite actually. I don't know what to do anymore. I need advice I guess. Idk