antidepressants and periods?

I was on 40ml of prozac twice a day for 6 months but after it doing shit I stopped it cold turkey. I realize that was dumb and had awful side effects for 6 weeks. Now it has been 5 months since I have gone off and I have yet to get my period. I'm eating normal, exercising normal, less stressed as ever and I'm def not pregnant. I just realized periods stopped after I stopped taking taking Prozac and was wondering if anyone had had something happen to them too. Ps. I don't have the pos, I struggle to gain weight have like 0 body's hair or diabetes.