i am 24 years old. i have been diagnosed with PCSO, and i took provera for three months (10 days each) 4 years ago and then when i stopped it nothing happened. 4 years later, i had irregular periods again, so i took provera since June for 6 months and my last dose was on November and then i had my period and after the period stopped i had another period one week after (Two periods / same month). now its time for my next period and its late 7 days, i am feeling bad headaches, stomach pain, cramps, and nausea. is it possible that these are just withdrawal symptoms? or could it be something else?