Barely any sex

Since getting pregnant I haven’t really had much sex with my s/o anymore unless if he is in the mood and randomly tries to I’ve been having more of an urge but it just doesn’t feel like he even wants to anymore just seems like he’s avoiding it there was like 2 nights ago we went and started having sex in our room and I was kissing on him and stuff and he was enjoying it the usual you know and then we got to switching different positions I’m usually supper super wet so sometimes I can’t tell if he has came or not but it didn’t really feel like he did much but so we switched positions and kept going and it was feeling so good to me he was still hard and all but we stopped I asked him why he was like I’m tired I’m like oh ok did you at least finish he was like yeah I’m like ok I was like can we at least do it again later mins you it was 4 am because he gets off work and wants to just watch tv till really late so he goes idk baby and since two nights ago we haven’t done anything yet I try so hard to keep it entertaining like after our shower last night I didn’t even get dressed I was putting oil on and he completely got dressed and it was like I was invisible he rubbed on my boobs but nothing else happened .. I’m just idk I hate this job he works I hate everything about it I hate how he has changed drastically like does he not find me as attractive anymore is he having sex with someone else ? Like is it weird for him that I’m pregnant and with a big belly ? Idk 😔