I have been on Ortho-Evra (birth control patch) for almost 3 years with no problems. When I remove my patch after the 3rd week, I usually start my period within 3 days. It has been almost 5 days now, with no period in sight. I'm a little concerned, but I don't want to run out and spend $15 on a stupid pregnancy test, only to start a day later! If you are on the patch, please tell me how many days after you remove your 3rd patch does it take before your period comes.