I am 18yr old I have irregular periods ever since I first started getting my periods. I took Plan B on May 7th 2012 around 6:30pm I had sex on may 6th at around 6:00am. the next week I was bleeding like a period then it stop. two weeks later i started bleeding again but with no period symptoms. in june I had a regular period. after that i didnt see my period until September 25th 2012 and today is October 10th and I am still bleeding I never bled for 2weeks this my first time experiencing this please help I really don't want to go to the doctor. I never took any kind of birth control this was first time ever taking this pill.