Am I pregnant? Okay I'm on birth control. And I took my last pill saturday, I was due to start the next day. Cause usually if I don't take a pill the next night I start that night. But my period didn't start till tuesday evening. And lasted only two days.

As . As long as you have been taking your pills correctly (1 pill everyday at the same time everyday without skipping any) you have a less than 1% chance of being pregnant. More than likely, your light period is due to a low estrogen content in your pill or from another cause such as stress, dieting, or heavy exercise. If you have missed taking some pills this month and have had unprotected sex, you may want to check a pregnancy test just to be certain. Good luck!