Pregnant from my fwb

Last month me and my fwb of 7 years had a condom tear on us. I found out I was pregnant last week (although I feel like I knew that from the moment it happened). We both don't feel ready for a baby, and have already decided to terminate the pregnancy... But now I'm having doubts, I had an ultra sound, and although at this stage it just looks like a pebble in my uterus, I realized for the first time that it's my baby not just a thing to get rid of. I know that realistically a baby wouldn't be the best option for either one of us, but idk.. It's just hard because I feel like although we're not a "couple" this has brought us much closer together, and I know our baby would look just like him 😊. I just have a feeling that if I go through with this, I'll regret it and feel guilty for the rest of my life, but, knowing that were both not ready, if I keep it it would "ruin our lives" or cause resentment between us or toward the child.