Hi ladies i started taking diane 35 pills 2 months ago i finished 2 packs already  but after 21 tablets just waited for 3-4 days i have my period but my problem is my period its not normal like before only had it 3 days but not much and constant headache everytime i wake up in the morning my neck and back of my head really hurts cant barely turn my head it feels like have a stiff neck. Never happen before i think this is the side effects to me.