Hi there, my first was november 2013, i had a morning after pill and then had sex in december, i haven't since, i got my period regularly, but this mo?

Irregular Periods : If your last sexual experience was in december and you have had several periods since, it is unlikely you are pregnant. More likely, you have entered an anovularory phase which may be due to stress, infection, hormone imbalance, pcos, or low lh-fsh levels. Regardless, this is something you may wish to discuss with your gynecologist and he may wish to have you come in for a thorough evaluation.