How old are you? Spots can stay there for quite a while...
And it depends how bad "bad" is? Some people freak out when they have 3 spots on their face, whereas others can have their faces covered in spots.
I had really bad acne (still have some) about a year ago, went to a dermatologist and they gave me an antibiotic and some other stuff as well. If you want something effective, the dermatologist is specialised in skin care - I don't know if that's what you meant by "the doctors"?