Hi Doctor, I usually take norethisterone to skip my period on holidays. Recently I also went on holiday and I went to the doctor . He gave me novynette. My period was due on the 30th dec so I started taking my first pill on the 25th dec. However I got my period on that 25th Dec itself at night . Why is that so ? Both are suppose to work the same way the doctor said. The doctor has answered my query by telling me when to take and stop norethisterone. Actually sorry my question was this time I took novynette and I took it 5 days before my due date. How come I got my period the day I took novynette Thanks for the answer that taking novynette got nothing to do with my co incidence of getting my period early this time. But then I thought novynette is suppose to stop or delay my period . When I took it in the morning it is suppose to delay my period but instead I got it the same evening itself. That means to say that it doesnt work if I take novynette the same day I am suppose to get my period . suppose to take it 3 days earlier?