Birth Control...

Well about 2 years ago... My mother put me on a birth control called Depo Provera... She put me on it because I was experiencing a very heavy flow and very very bad cramps... Well after I took it... My period stopped... And I always had this egg white stuff on my undies when I went to pee... It's worrying me because I only have a period like every once in a blue moon... Does anybody else experience this with their birth control??