Help 😭

I had a drunk night. Well, the guy and I had sex Feb 4/5, like the night of the fourth into the fifth. Condoms were used, I saw them. I didn't remember and didn't know about this until a few weeks ago. Well, the guy I believe to be the father, we had sex the 8th and the 10th. Without condom, no birth control. Both times. Period was Jan 28-Feb 2. Due date is November 5. I have done many conceive calculators that have pointed to the guy I hope, and figure to be. If anyone has any insight or expertise, I would love to hear. Thank you