Losing my temper w my 2 year old?!

I need advice, I’m starting to lose my temper with my 2 year old. I’m 24 weeks pregnant, and he always wants to be held, throws fits when I don’t want to hold him, or need space. He throws the wose tantrums. And never listens.😭

I’m also with him 24/7, I barely get a break away from him and I’m going insane. My boyfriend works weekends only and plays video games all week. Doesn’t bother too much about helping out with him unless it’s playing w him for only 10-15 minutes.

Kind of bullshit.

I’m so stressed and beyond my breaking point, I have mental break downs and I can’t even sleep anymore without taking melatonin or something. I’m going insane, and I don’t know what to do.