Pregnant with a 6 month old

I had my daughter may 4th, I just found out I'm pregnant again. I don't even understand how this happened.. I'm breastfeeding plus I'm using the mini pill & condoms. But somehow, I'm pregnant. I'm so lost on what to do. I don't bash on abortion but I don't think I can ever see myself ever going through with it. However, given our current situation, idk.. my partner is at a loss too. We have our own house & everything taken care of. I mean, we're not rolling in money but we could do it. He works, idk. I just kinda wanted to go back to work after I was done breastfeeding her at a year. But that would mean I'd be giving birth just a few short months later. I know the end decision is mine, but I just kinda want some reassurance or advice. I don't have anyone to talk to about this. I also haven't made an appointment for anything yet, but I'm going to call Monday.