am I not supposed to be a little upset?

An
So I'm almost in my 3rd trimester, lately my SO hasn't been wanting to do much of anything with me besides sit in the house or lay in bed. Friday was our anniversary & we made a home made dinner.. & then after that he went out to go hang with his friends while I just went to my parents to hang with my family, he promised 2 nights in a row that we would go & do something... both nights bailed & I ended up being home while he's out with his friends. I didn't make too big of a fuss about it because it's nice to be with your friends sometimes & he is a guy. Buttttt what's bothering me is don't tell me you wanna do this & do that & i suggest things we can go do all day long & you don't budge at all... but the moment your friends come into the picture he has no problem doing anything with them... 
We only get pretty much weekends to hang with each other because his job is hard labor & by the time he gets home he's too tired to do anything ... so by the weekend comes I expect for at least a day of hanging out I miss him all week.. just really upset & I know my emotional hormones of being pregnant are getting the best of me I just feel like he doesn't enjoy my company anymore....