Was put on bcontrol pills 2 stop prolonged bleedin and regulate periods. it stopped me frm bleeding bu now i have brown discharge. iscancer a concern?

Unlikely: Brown discharge might just be old blood that's taking a while to leave your uterus because you're not having regular periods anymore. Not a concern unless it's foul-smelling, causing pain, or associated with any other symptoms like itching. You're young to have cancer, but not too young to get an examination from a GYN doctor just to make sure.