Daddy?

Patient: I had sex aug 3 with my ex he broke up with me i got a new boyfriend sept 21 and had sex with him, i got implantation bleeding sept 28. would the baby be my ex or my boyfriends?my periods are irregular, but i did some research on implantation and is said it occurs a week after sex.. so i had implantation bleeding a week after sex with my boyfriend.

Doctor: