Hello I am on birth control "patch". I put it on for 3 weeks, once a week then off for a week of which I would have my menstruation. But I forgot or missed putting it for 2 days and I bleed even if I did put the patch on the 2nd day I missed. Now the bleeding continues even until the whole cycle of the week and then to the 2nd week after I replace the existing patch. I have my menstruation for 2 weeks straight. And I have to put the patch again tomorrow but I'm still bleeding. It's never happen again and I was on the "patch" system for 8 months now. Can you please tell me what's wrong? I'm a 50 years old healthy woman.