Hi I'm 18 and I have started using birth control pills on my period last December December 10 until December 12 of 2012 I usually have a 5 day period but when I tried it it was only 3 or 2 days so I thought it was okay for the pill or an effect of the pill, after that week me and my boyfriend had an unprotected sex everyweek after that I have been taking the pills religiously an now I'm worried cAuse I have started another pack 2 weeks from now and I still don't have a period but I sort of taken a wrong pill after finishing the first lane (the 1 to 7) I accidentally started with the pill 14 until on the 12 pill and I had an unsafe sex last week during the incident that happened I only realizes it that I was taking the wrong pill fir the day when I was already taking the 11 or 10 pill now I'm confused I took the Pt and I'm not pregnant and I'm worried cause I'm habibg a delay on my period please help me thank you so much

First... on most Pills you have a regular period... its posible you are pregnant and just tested too early... give it a few more weeks and if your period hasn't come before then take another test.

No birth control is 100% effective. They just reduce the odds.