Stuck and unhappy

I’m 15 weeks pregnant and I feel as though my partner is very toxic and manipulative for example he was jokingly saying I need to go to therapy which I have considered before and it upset me and I got mad and said “who says that to anyone” and he tried flipping it onto me saying that I said that he was “special” before??? Then when I ask why he’s done something stupid, he says “well you did this...”

I’m beginning to become unhappy and not myself, I say I don’t want to have sex with him one night then he keeps saying “well can you give me a hand job” and other shit like that. I clearly say no. no is no and he keeps going at it tryna argue with me. I say he’s so childish- which he is, he’s 19. I’ve got a 2 year old to another guy and now I’m 15 weeks I’m the same age. Im just so scared having 2 kids on my own, I still live with my parents and I feel like my life is fucked.