After the Shot

I went off the birth control shot about 6 months ago... And at first my period were heavy and I had bad cramps and about three months ago I stop getting one at all. I went to the doctor and the gave me a pill to "jump start my period" and it work a got a little period but it been a month an half since my last period. I took a pergency teat and im not pergant but till no period. My emotion are all out of control and i'm get sick all the time. Dose it some like i'm pergant or more side effect of the brith control shot?? I cant take much more of this