I am on birth control and have been for about two years now(ortho-cyclen). I started my period about 10 days early, while i was on the pills i wouldn t normally have my menstrual cycle on. this hasn t happened before, and for about 5 days Ive had really bad cramps, (i m not one to usually get these, bad at least) and my period normally only last about 3-3 1/2 days, but this time it was about 5 days long. And just today, on my left side above my hip, it started to feel sore to the touch, and i get these stomach aches. could it be anything serious?