Hi my name is Erin, I am 23 years old. I started my period when I was 12 and it has never been regular. I was on it for months at a time, non stop. I then went on birth control at 17 to regulate it and it made my periods go from months at a time, to 2 weeks at a time but once I stopped the birth control pills, my periods stopped with it. I have not had a period in over 5 years now. Is it possible to get pregnant even though I have not had a period for so long? What can I do to find out what exactly is the cause of this?