Contraceptive pills

Hi mommies, Meron po ba ditong EBF na nag stop from taking pills and nag stop ulit from having monthly period due to EBF? 1yr po akong hindi nagkaka period due to breastfeeding which is normal but i decided to have consulation para ma regulate ang monthly period. I was prescribed to take contraceptive pills (Yaz) for 6mo. April po yung ika 6th months. Then this month (May) i notice na, matatapos na yung month, hindi parin po ako nagkaka period.