I Am having mid cycle bleeding similar to a period. Very heavy. My last period ended only 1 week ago. I have been taking Micronor (norethindrone) for 1 1/2 months?

Micronor (norethindrone) As with all progesterone only contraceptives, abnormal bleeding is a side effect. This could mean no bleeding at all or bleeding every day, or anything in between. Keep a calendar of episodes of bleeding. It usually takes 3-6months before you will settle into whatever pattern you will end up having on the Micronor (norethindrone).