15 Year Old Girl, On Birthcontrol, l Discharge!? HELP?

I am 15 years old, i am not a virgin and i don't think i have any stds. I have not got a pap test because i am scared and i dont feel comfortable talking to my family doctor either. I am on birthcontrol (the pills) - yasmin and have been for about a year now, ive been having a discharge from my with an odor that smells and makes me feel wet? is this normal .. i am very concerned, its been going on for awhile now.. could it be from the birthcontrol?