Insensitive and irresponsible SO-kinda long

Insensitive and irresponsible SO-kinda long

My SO just doesn't understand all the stress that I'm under. He honestly thinks that because I'm a SAHM that everything goes perfectly for me. We have a 1 year old son together, whom I love more than anything and happily sacrifice anything and everything for. Money has always been tight, but after doing the math it makes more sense for me to stay home than to work and pay for childcare unless and until I can find a job that pays at least $12 an hour and has a set schedule since my SOs schedule can be unpredictable. I'm 31 weeks pregnant with our second child and I do everything around the house. Literally all he does is work and he thinks that's all he has to do. I do all cleaning, shopping, budgeting, taking care of our son. I even wake him up in the morning for work because he's terrible about getting up. The past few days I haven't been feeling well. Very nauseous again, a little light headed, and unable to eat. Life goes on though so I can't relax and try to feel better. He came home from work yesterday upset that the house wasn't as clean as it usually is. I hadn't picked up my son's toys and there were a few dishes on the counter in the kitchen where I had cooked for my SO and son. I brushed it off because honestly I don't have the energy to care about petty little problems right now. However, he's been getting to work late a lot lately and has gotten in trouble for it, and quite honestly his job is in danger because of it. He is supposed to be there at 8. He works 20 minutes away so he should leave around 7:30 to be on time. It's 7:35 now and he isn't even showered. He refuses to wake up. He hasn't even set an alarm for the past 2 days so I have no choice but to wake him, and then am told I keep bothering him. There is no safety net. If we miss one paycheck, we lose our home, our utilities will be shut off, and the car will be repossessed. I'm so frustrated and don't know what to do. I don't understand why he's suddenly acting so childish and jeopardizing our son's (and our daughter's) well being. When I bring it up, I'm told how exhausted he is. Meanwhile, he slept pretty much the entire weekend. Our son still doesn't sleep through the night so I'm up with him 3 or 4 times a night. I literally haven't gotten more than 6 hours of sleep in over a year, and that's not even a solid 6 hours, but broken up. I just don't know what to do anymore. My stress level is through the roof which doesn't help sleeping either. Any advice on how to get through to him, because just trying to talk to him about things isn't working.