Can't do this anymore.

Me and my husband marriage seems to be falling apart every other day. I'm unappreciated. I work my ass off. I'm a high school drop out and I'm trying to get my schooling done while working 5.. 6 days a week, trying to conceive for 3 years, and he works 5.. 6 days a week and goes to college full time. I feel I'm not good enough for him because he does is bitch about every little thing. I'm so confused and lost I don't know what to do. Tonight I decided to sleep in my guest room because I think a night alone would help, I even packed a suit case to move out but I never move out. I need advice on what to do. Please help my marriage is in trouble. My body won't let me have a baby, my doctors are all about my weight and won't help me get pregnant and I'm happy with myself that should be enough. I'm just so done with life. It kills me to give up on everything. I'm a quiter... what can I say... 😢😢