A regular dr should be able to unless the infection has been there too long & spread up inside & perhaps become more serious. Start with the regular dr, preferably one with some common sense & who will actually listen to you, the patient before making a diagnosis!!

If I were you, i'd go to the gynocologist. They can diagnose the yeast infection and check for other things at the same time. If you do have a yeast infection, you should get a prescription for the pill diflucan. It's just one pill and it clears away the symptoms in a few days.

...By the way, they diagnose this by checking various symptoms: if you have terrible itching and a whitish, cottage cheese discharge ( that typically smells foul).

The way I have always been tested, is the doctor (or gyno) takes a sample and looks at it under a microscope. They can tell this way if it is a yeast infection or bacterial or whatever. A regular doctor can do it as well as a gyno.