Medicines can change menstruation.
No not at all. Hormones effect menstruation.
Semen can't really effect menstruation, this is because menstruation is controlled by the hormones in a woman's body - the only time semen can effect menstruation is if it results in pregnancy. Semen can however soften the cervix which can help induce a late period.
estrogen and progesterone
I had it late and prolongued...
No, a vaginal suppository doesn't slow the flow of menstruation. Menstruation is the shedding of the uterus lining, nothing you put into your vaginal canal can effect this shedding process. There are medications that can effect your flow.
No, antibiotics do not effect menstruation - although if you are ill it can cause delayed menstruation or menstrual problems.
no
yes. Menstration will not effect an extraction.
Menstruation doesn't effect how well you tan.
No, grape juice has no effect on menstruation.
make an appt with your ob/gyn. to be safe, take a blood pregnancy test first. if it is negative and your dr cannot find any other reasons for the delay of your period, s/he will prescribe one of the forms of provera to induce menstruation.
No, nothing you eat can effect your menstrual cycle.