Pain in boob

All of the sudden there’s a sharp pain in my left boob, it feels like a small lump as well. I just ended ovulating and my boobs do get sore but that’s usually a week before my period starts.

I just turned 18 years old, and I still have to go to my pediatrician but I don’t want to go to my pediatrician. I’ve been there before for other issues and she classifies ALL my pains as just “growing pains”.

What should I do?