Want a divorce but SAHM

Literally have no friends or much family. I tried to get a job after my daughter was born so I could leave but by the time I had things squared away I ended up pregnant again and felt stuck. We only had sex ONCE in ten months(don’t need lashing). My newest baby is almost 2 months old and I’m so over my husband. He’s a drunk and I can’t really take much anymore. He’ll be better for a short time then get right back to it. Money is always so inconsistent. He’s rude and selfish, and careless. I guess I just need advice. I’m not physically abused but emotionally drained. Neither of us really like eachother anymore but I literally have NO ONE. With Christmas and holidays I feel extra stressed. My baby contracted RSV and I run on about zero sleep. I guess I feel like I’m drowning. He has helped a little with housework lately but it doesn’t make up for the other things. HELP