Hi, i was taking yaz last year in may 2010 and i stopped in july 2010. it was hurting my stomach too much to continue taking, and my doctor told me to stop taking it. I had my period in november 2010 and that was the last ive seen of it, and when i got the period in november it felt like i was giving birth again it hurt soo badly, i thought i was going to die! .. anyways it is now june 2011 and still no sign of my period, im not pregnant, ive been to the doctors and god blood test and everything! whats wrong with me?!?! is it the yaz's fault!!??