GL,
They would have not made you wait that long, believe me I've had so many mammo's,ultrasounds, and 3 friends,one died, the other 2 are survivors of cancer. I think you are overreacting and need attention.
Like others said, "relax". Try to fill time keeping your mind busy, even a job, I found it helped me get through those long waiting periods.
Oh, BTW, I've had plenty cysts removed,biopsies,aspirations, so I have a very good idea about worrying. I've had many experiences with cancer worries, of other parts of the body, many tests painful, bladder,uterine,endometrial,skin, etc. it's normal to be scared, and worried till the results are given, but no doc would wait 6 months to tell you.
I had to get mammos every 6 months, then back to once a year, yeah, I was worried, but I refuse to allow myself to obsess with that, for my life is more stressed and busy to sit and obsess with every little thing I may have.
It is still important to have yearly physicals, so I stick with that.
Please try to relax and stop obsessing, you'll only make yourself feel worse and falsely make yourself doomed.
Take care now,
DE