22(f) just found out I’m pregnant after bf cheated

I (22f) just found out my “Christian” boyfriend was cheating on me WITH TINDER GIRLS for about a month. As far as I know it was emotional cheating only but probably lots of sexting, etc. Anyways I broke up with him immediately after and that was two weeks ago. For more context, I went off the pill in July and have been extremely irregular since then, so I thought I was likely infertile until my cycle went pack to normal. Regardless, we had been extremely careful. We used condoms every single time except LITERALLY ONCE. This was back in December. I took a pregnancy test today because I have been abnormally bloated recently and thought I should to be safe. It was positive. I have had basically no other symptoms which is wild because I now am at around 3.5 months. Obviously I am freaking out. I have always been pro choice but anti abortion if that makes sense. However I am not in a situation (life or financial) where I am ready to be a single parent, and I believe that is what would happen if I went through with this. It is crazy to me that some people try for years that want a baby and some people get pregnant by a one time fluke. Life is cruel sometimes. Anyways, any words of wisdom or encouragement would be appreciated. This is a very scary situation.