So I'm 16+4 by my dates 16 by nhs due date.
Slept with my ex all in August and September. Dates from the 13th-24th all with a condom but it did split around the end date I think. I had a light bleed during the time too that we was having sex.
My ex came back on the scene from September 30th-7th by the 15th I'd had a clear blue test put me as 1-2 weeks.
Both men know. But I can't work it out. I'm guessing my ex as that was all unprotected, however he has had testicular cancer and had a testicle removed and chemotherapy so I don't know if that could affect his sperm count? No idea.