The pill is 99% so there's always 1% chance. Take your pill everyday and at the same time. I heard you still can get pregnant even if you take your pill everyday and at the same time. It depends on your body really.
I'm on the Cilest Pill and I threw up 3 times in 1 night. That was last Sunday. I was going dizzy as well. This Wednesday I nearly threw up again and the next morning. It was really awful. Now I just don't feel right and not myself. I see if I get my period.
If you vomit or have a stomach upset then use protection and keep safe. Take your pills properly. Then you don't need to worry.
Depends on the women I was on the pill when I got pregnant with my first daughter and then I changed to the depo shot and got pregnant on that. So be very careful if you are sick or have diahrea or taking antibiotics your pill will NOT work.
thers always a chance but if your on the pill its really low