There's nothing wrong with that! It's actually a good thing you want to go! It's for your own health, after all! A lot of doctors advise parents to start taking their daughters to a gyno once they start their periods, but not many do. Ask your mom or whoever if she can get you an appointment to one!
And yes, smelly discharge and itchy genitals are something that really should be checked out. Same with lumps under the breasts. Those are not always normal. Younger girls can have dense breast tissue which can cause little lumps and bumps, but it would be best to get checked out just in case.
And it would probably be better to just have a gyno do that all. They're experts in female reproductive organs, so they would hobble to do more tests, and inform you a little better on everything you want to know about your body.
