What should I do if I'm worried I might be pregnant?

Go to the doctor! ask for a pregnancy test and let it happen as it happens talk to your mum or who ever you feel will listen and give you advise, look at Birth Control methods and go from there, im 15 and im pregnant, i think as long as you feel that you're ready go ahead but make sure you have a partner that loves you and is willing to support you through this time...