With a child so young and with the fact that you're studying, nobody could blame you for not having the strength to leave.
It doesn't sound like you want to save this relationship and with that level of resentment, I don't blame you.
In your shoes, I wouldn't want to have sex with a partner who treated me that way and said those things about me. I would be putting my energy into my child and completing my studies. I would also be saving as much as u could so that I could get into a good financial situation and eventually able to leave.
You say your first relationship was bad and that this one is slightly better... Here's hoping the trend continues and your next relationship is another improvement and you get to feel the love that you deserve.