Hi - I have been in the same birth control pill for over 10 years. Never had any problems. This month I saw few spots while still in the pill then my period did not appear when it was supposed to (three days later). I took a pregnancy test to be sure and it was negative. I was supposed to start my pill again Saturday (I am taking a pill that has just three weeks and then you stop for one week - when you are supposed to get your period). What do I do? Do I start again on Saturday also if I did not get my period?

Thank you