hi, I'm 18 years old and have been on birth control for about a year now. Try cyclen is the kind I have. Sometimes when I really don't want my period I will start a new pack, the week you're supposed to get your period so I don't get it. Once I did it for 3 months and didn't have my period, I just kept taking a new pack. After that I had my period and then I did it again and didn't get my period for 2 months, and now I'm on the week I'm supposed to get my period and I'm on the 4th day and haven't gotten it and I'm worried. I was told it's okay to take a new pack of pills and skip your period. I have a boyfriend and we have sex all the time, but once without a condom about 1/2 weeks ago, but he pulled out. Ive never missed a pill before, and I've never Had to wait more than 2 days after I stop taking the pill to get my period. So I'm worried maybe my birth control isn't effective anymore and I could be pregnant? I sort of have cramps and I had a little tiny bit of brown discharge the other day but still no period. Can someone help me?