Recently I was on the prescription drug Naproxen for a minor concussion I was suffering from for about two weeks. I stopped taking it around my ovulation date, but my period is now almost a week late (my period is usually a day late/early). I have been sexually active but we've used protection every time and didn't have sex during my ovulation period. I stopped being as physically active so I could heal and was wondering if less activity and the drug could be delaying my period?