I am on Yaz birth control. This month i got my period when i expected to althought it was pretty light and lasted about 2 days. Anytime i've had sex i've also used a condom along with the pills but im worried i could be pregnant. I def. dont want to be pregnant im too young! My periods seem to be getting shorter every month last month was about 4 days and this month was like 2. What do you think? :-(