I just feel like I’m doing this on my own

Ranting please be nice!!

My baby boy is about to be 5 months and it just feel like I do everything. Right now I’m a stay at home mom baby sitting jobs on the side, my boyfriend pays for everything, rent, cars, phone, internet, etc. I appreciate everything he does but he never gives me a break, I tell him I’m tired and he’s like “I’m tired too, you didn’t work all day”. I have talked to him about this multiple times, told him I’m going to leave if it doesn’t change, then things change for a week or so, then go right back to the way it use to be. I’m at the point where I’m about to leave... We go to family events and he shows his kid off to everyone playing the amazing father when behind closed doors he does nothing to help... I just feel like I’m so alone... I didn’t make this baby on my own...😭😕