I don't want this baby nor do I see myself being with the guy who got me pregnant

I'm 22 I have two children both girls 4 and 5. Right now I'm going through a custody battle and it's almost over. I've been dateing my boyfriend Chris for almost a year now and we kinda broke up around a month ago. During this break up I was talking to a guy he is 18 I was 20 he is about to be 19. We did some things and but I ended up going back to Chris and I just found out I'm pregnant by the other guy who is 18 still and I just turned 22 I work at KFC and so does he. I don't want this baby nor do I see myself being with the guy who got me pregnant I'm almost 2 months and my boyfriend doesn't know but the guy who got me pregnant does . I want to be with my boyfriend and I don't think I could take care of 3 children working at KFC making 7.25 an hour