Neglectful SO

Sexually my SO is very neglectful. The past 6 months we have sex 1-3 times a MONTH. And it's not because of me. I'm always the one initiating it. I know not having sex regularly can affect having a baby along with other things like him drinking ect. And he says he wants one like now but doesn't do anything about trying. Idk what to do anymore. I'm so tired and hurt of being rejected for sex and not feeling attractive. I've done everything, to try to have sex and it's still a no. Even tonight I was talking about how we can do it tomorrow and being sexy about it he didn't say anything. I just said okay guess not then... Still didn't say anything. And lately I've been hating the way I look, I've been struggling with acne really bad&other small body stuff(even though I'm a pretty small girl). It's starting to make me think he hates the way I look to. Idk what to do. I've tried talking about this a long time ago and it's just talking to a brick wall. Yes this bothers me a lot, but no I'm not going to up and leave him right now. I've been with him for 3 years and live with him. And no I don't think one bit he's cheating on me. Idk what the deal is, and he doesn't really say much about it.