Honest advice for a ftm

So my fiance works a terrible shift 12am-10am. He busts his ass daily for our family. But lately, since I have become a SAHM. I've noticed more and more comments about this not being done, or that not being done. He says all I do is sit on my ass all day. I am a full time student, medically retired vet, I pay half the bills and raise our child all day. I get his job sucks. He's a supervisor for UPS so holidays are horrible for him, he also lost his mother at a young age and it doesn't help. On top of all of this, he complains about our sex lif, mind you, he's in bed at 6pm every night. Our child is still awake. I'm not sure how he expects me to drop everything with our son and give him the sexual attention we both desire. I'm just so upset. It's been such a rough month. The dishes aren't done every night, but my house isn't dirty. I'm not lazy. I'm raising a child essentially alone. He complained about watching his son for 3hr while I prepared for four finals tomorrow. I just don't know what else to say or do. Sorry to vent but I need a judge free place to talk.