I didnt have my periods for 4 months since march to july 2015, I did have acne and my doctor prescribed me althea pills. I took althea pills for 5 months since aug.2015 until december 2015. Though i stopped it, i had my period for january and february 2016, Im expecting to have my period on the 1st of march but still dont have my period, is it normal to delay my period after stopping the pills for two months now?