Hi, I'm 16 years old, and i'm using the Ortha Evra contraceptive patch. I got a prescription to the birth control maybe a month or two ago. I still have a lot of questions about the birth control. How long does it take for the birth control to be effective? I heard if you put it on the first 24 hours of your menstration cycle, you will have immediate protection. Does it work immediately if you put it on 2-3 days after you start your period? When I was at the gynecologist for the first time, I went on my period and she told me it would work when I put it on my period (even though my cycle was almost over) but I read online differently. Me and my boyfriend had unprotected sex a few days after I put a new patch on? Will I be okay? I am due this week. I took my patch of on Tuesday. I am having a little spotting. Does that mean I'll get my period soon?