I’m so miserable

I got pregnant 3 months after having my son. I work full time, am attending university, pregnant, trying to take care of my baby, and trying to please my boyfriend and his family and I’m absolutely exhausted. I don’t feel like a woman anymore. I feel like a vessel. Like some kind of machine built to bring babies into the world and keep my bf emotionally and sexually fulfilled. I get nothing in return for what I give. I know my boyfriend loves me as does his family. But people do not see or care how badly I am hurting or how little I have left to offer. I love my son and I feel blessed to be bringing this new baby into the world. But I just feel like I’ve lost myself. My boyfriend has no responsibilities. He prioritizes his mother, his friends, his weed smoking, and my son and I come as a last thought when he’s got time left over. He gets to go out, travel, and live it up while I am stuck at home with the baby and a million assignments to complete. When I bring it up he swears he’s doing what he thinks is right. But how could he think this is right?! I’m losing myself and I don’t know what to do anymore!!