How long have you being taking the pills for? And it may be the type of birth control pill that you are taking causing this so you may just want to call your Dr and set up a consultation because only he/she can really advise you wants going on.
Being afraid of your doctor doesn't make sense. You must see your doctor so that proper treatment can be given. Blessings - Blu
It is not likely to be cancer. You might have a cyst or something. There are many better procedures now. There is nothing to be afraid of except not getting it taken care of. If you let it go on, you will get more and more anemic and you won't be getting blood and oxygen to the brain. It takes a while to recover from anemia. Go to the gynecologist ASAP.