I have a 9 month old and found out I’m pregnant again

This is a complete shock to me. My boyfriend and I hardly had sex last month and JUST started using condoms 3 weeks ago (I don’t like the effects of birth control). My period was due the first week of September, around the time I was supposed to get it I was extremely crampy and irritable and just felt all around yucky and knew it would show up within that day or the next. Two days later my cramps were gone and I was having extremely vivid dreams and by this time it was almost 2 weeks late and I had a gut feeling by the point I was pregnant. I took a test just to rule it out and sure enough it showed up positive right away. I’m still kind of in disbelief. I feel extremely guilty by want to get an abortion and I HATE that word, but we just cannot by any means afford or support another baby right now. He has a 4 year old from his previous relationship and then we have a 9 month old. Right now my boyfriend is the only one working and only makes 12 an hour, luckily we live in a home my mother owns and we get reduced rent, but we are JUST making it by. I would love nothing more than to have another baby, but realistically and financially it’s just not possible. It’s not the right time. My family helps me out a ton with my son, without them I don’t know what I would do. I just don’t think having another baby would be fair to do, especially if we don’t have the means to support a baby right now. I’ve been extremely emotional about the situation because it breaks my heart that the right thing to do right now is to not go through with this pregnancy. My boyfriend and I agreed that he would be the one to work while I stay home with the kids. But after 9 months, I’m ready to start making my own money to help out and to save up. I know I’m going to be judged for this I’m sure, but I’m really looking for some support. My heart hurts.