Not sure if I want this pregnancy

I already have a little one, she’s one and I still struggle with supporting for her. I have been dating this guy for 6 months and somehow I’m pregnant?? We were being careful but also, him and I haven’t been together for weeks and I just found out I was pregnant yesterday. I really don’t want this pregnancy and it doesn’t help that the guy I was with, keeps talking about a future that I really do not want with him.(he wants me to sit at his house and not do anything but carry this baby and mother my one year old) He makes me feel bad for wanting an abortion(crying, yelling etc.) but I already have a babygirl and I want to provide the best to my abilities (which I’m just now getting good at)... is it bad if I still get the abortion?