Advice please

I am 30 weeks with my first child I am a teen mom I'm a month shy of 18 I'm in a very abusive relationship my child's father has abused me in every way possible it is an everyday thing now i haven't told anyone because I am too embarrassed I feel as if he'll never stop I do not want to bring my son into this I already love him so much and I want to keep him but I feel like I won't be able to give him what he deserves I feel like he could have such a good life with another family who is stable and will have both parents involved in his life I want to keep him so bad I love him I'm just afraid I won't be a good mother.