Left breast bigger than right?

Hi all, not sure if this is the right place but I just need some reassurance.

I'm 17 years old and my left breast is about a size bigger than my right. It's always been bigger and I know it's normal to have a bigger boob but everywhere I've looked said "slightly bigger" and mine is more noticeable than slightly.

That being said, my period ended maybe a week ago and usually my breasts stop being sore by the time my period ends but for some reason my left breast is still sore and I'm a bit concerned as this has never happened before so was curious if this is normal?