Partner driving me crazy

I have been with my partner for 3 1/2 years, we had our first baby end of June this year. We both love my son to the moon and back but my partner is driving me bonkers, his family are driving me bonkers. My partner doesn't listen to a single word i say, i feel like i'm talking to a brick wall, he just sits on his phone all day and watches youtube. He's not interested in me at all, he never compliments me and we haven't had sex since i was 12 weeks pregnant. Do you think he's fell out of love with me, he wasn't like this before i was pregnant. We used to be so close, but now i feel we ain't in a relationship anymore and we are just parents to our son😭😭