Officially known as Othro Evra, the birth control patch is a small square that looks a lot like a band-aid. It releases hormones, similar to those found in birth control pills, through the skin to stop a female from releases eggs, or ovulating. This is another hormonal method of birth control, which basically changes the way a female�s body works to prevent pregnancy.

You stick the patch on your stomach, upper arm, lower back or buttocks.  Each patch is worn for one week at a time for three consecutive weeks. After three weeks of wearing a patch, you remove it for seven days which will  trigger your period. After those seven patch-free days, you apply another patch to start your next cycle.

When used perfectly, the Ortho Evra patch is more than 98 percent effective at preventing pregnancy. The patch offers NO protection against sexually transmitted infections, so a condom must also be used during intercourse.

Like the pill, there are a few side effects. Some girls will have lighter, more regular periods. Others will suffer some skin irritation where the patch is applied. And it might not be effective for girls who weigh more than 198 pounds.

You need a prescription for the patch, just like you do for other hormonal methods. The cost varies depending on where you go for a prescription. Usually, you�ll pay less if you go to a family planning clinic, like Planned Parenthood ($30-$35 per month), versus a private doctor�s office. But, it really depends on whether you have health insurance you can use. When you call to make the appointment, ask. For more information, go to www.orthoevra.com.