Ashamed but need help with easing my mind...

I slept with a guy on Feb. 3, and a different guy on Feb. 22. I just found out I’m pregnant.

Jan. 23-27 - very heavy period (normal for me)

Feb. 3 - sex with guy #1

Feb. 17-21 - very heavy period (normal for me)

Feb. 21, 22/March 1,2 - slept with guy #2.

So, based on the “first day of last period” my doctor says I’m 4 weeks 5 days pregnant, meaning the baby is guy #2’s. Is there any chance it’s guy #1’s?

I’m losing sleep over this wondering how I should handle this.