period and birth control

I am on my second month of birth control now.  My period during the first month came before I got to the sugar pills and lasted about 8 days, which is longer than normal.  Tomorrow is the start of the sugar pills and my period still hasn't came, I have been having sex on a regular basis, should I be worried I am pregnant or am I just over thinking this.   Is it normal for my period to come at different times when starting birth control?  During the first month there were some days where I missed it but took double the next day, but this month I have been taking it at the same time every day.  

[thatquietgirl]

If you are taking your pill at the same time daily and not forgetting or skipping, your chances are very slim.  I always take 3-4 days of the placebo pills to start mine.