Missed period not pregnant

So for the first time in 3 years my husband finished inside me. I was 3 days past ovulation so I figured it was fine. Now I’m 3 days late for my period and I’m always usually right in schedule. I’m not pregnant I’ve taken 3 tests morning and night and there’s not even a hint of a second line. I missed a period last year after my husband finished inside me also which is so weird. I’ve never missed a period unless i was pregnant which I have been twice. I’m just wondering does anyone else notice semen messing with their cycles or hormones???