not sure what to do

So I just found out I'm pregnant for the second time. I have a 3 year old. I am a single mother to him. and I'm a single woman. The father of baby #2 would be around but we don't get along. and I'm not ready for another baby, I had a very hard pregnancy the first time. when I took the first test hoping it would be negitive like the one I had taken about 3 days earlier, when it wasn't my first thought was abortion. and I began to drink, it was new years eve. baby daddy is mad that I want to. but I can not rely on him to get a job to take care of his now family of 6. he has 2 kids with someone else and that is a whole other story. if this would have happened while I was actually with him it would be different but we have been broken up for a little over a year I just can't seem to leave him alone. but he is just mad because I don't want to have a baby because he can't take care of me. and I feel like that is a good enough reason. and if I were to keep the baby, I would feel like I would have to work things out with him. something that would be extremely difficult. I don't want to settle and I don't want to sacrifice everything just to make some guy who won't do anything for me happy. am I wrong for that?