Hi claireabella,
The mind certainly can go into overdrive with waiting & the anxiety, hyper awareness & tension that goes with it, will also give you the symptoms you describe.
The GP is most likely right about this, it’s far more likely to be a cyst than bc especially as you have a history of this.
The important thing is you’re getting it checked out, so there’s nothing more you can do now.
Chances are all’s well, it usually is.
ann x