Please help 😭

I’m having a really hard time feeling attached/loving my baby... I unfortunately got myself into a situation when I was single where I had a hookup and our condom broke, 4 days later my ex and I decided to work things out and try to get back together, we had sex and he didn’t pull out in time. Now I’m pregnant and I don’t know who the dad is for sure. I’m having a really hard time feeling attached to my baby because I DO NOT want it to be the one guys, and if it is I’m so afraid I’m going to resent my baby. I feel horrible about it.. my SO (ex at the time) said he will leave if the baby isn’t his, we’ve been together since we decided to get back together and he knows there’s a possibility the baby might now be his. Someone, anyone, please let me know I’ll love this baby no matter what 😭