Could The Delay In My Periods Be Due To Stopping Iron Tablets, Or Possible Exposure To Pre-seminal Fluid During Intimate Contact?

Asked by my girlfriend Hello My age is 20. My query is regarding delay in periods. Recently, I had an intimate moment with my boyfriend. Although our sexual activity didn t involve any penetration but we didn t use any protection. I doubt we did have a contact with pre seminal fluid. This happened on 12th of April. My usual date of having periods comes at the end of the month (25th-30th to be precise). I feel there is a delay in my periods. I have been taking iron tablets as part of a treatment for hair growth. I am anemic. It was a 6 months treatment, starting from October 2020, it ended in March 2021. I faced a delay in periods during the first 3 months of the treatment. Could not using the iron tablets be a reason for the delay? I don t notice any symptoms or signs of pregnancy, like vomiting or fatigue.