Burnt out

I feel like I out every one in my family first but no one puts me first.... husband will stop on his way home from work for a pop or snack but never offers to get me anything or even asks, every time I go out on weekends I bring him a pop even before he asks. I'm home all day with an almost 5 and almost 3 year old constantly asking me for something and when dad gets home and on weekends they still ask me. Lately the 3 year old has been SUPER clingy so I haven't been able to just sit alone. I got in the habit of co sleeping with our 6ms old and hubby started getting the 3 year old out of his bed when he wakes so all 4 in our bed.... the sleeping arrangements is just a mess right now and I'm sure that's not helping me mentally. We built an addition on our house but every time hubby has a day or a few hours to work on it he doesn't. It feels like daily he justifies sleeping half the day way, or says he doesn't feel good, or has a headache so stuff isn't getting done. I'm trying to do what I can around the house but when I feel like it's only me I get overwhelmed. His doctor wants him on meds and when I told him he needs to be truthful with his doc about everything he keeps saying I'll make an appointment, but doesn't follow through. It's been a long rut... in March my bestie and I are planning a weekend away, except we have to bring her 3 yr old and 7 ms old and my 6ms old, I can't wait. With our 3 year old my mom refuses to let him sleep over cuz he has no bed time routine, thanks dad... I had finally got him where I could rock and put him to bed. Then when he'd wake at night I'd sit with him. Then at 9ms pregnant I couldn't lift him or get out of bed at night so then hubby started bringing him in our room at night and in the evenings he's up till he falls asleep on the couch.... he has no door cuz it broke and hubby wont fix it cuz when we finish the addition that room goes away into a hallway. Plus a few weeks ago hubby took everything out of the chest in his room so blankets are all over and course he hasnt picked that up but I'm sure if I mention that it'll be why didnt I do it. That's his go to, he makes a mess walks away and after a few days if I ask him to clean it he says I should've.... thanks for reading