This is a great site for support. I know the waiting and worry is hard, but try to distract yourself. Just because you have history doesn't mean you have cancer. Do you do self-exams? I know at some point we all get a "call-back" but most of the time it is nothing. Can I suggest asking for an ultr-sound if they don't?
Stay calm until you get the appt.. In my opinion if they felt it was something dangerous they would get you in sooner..that is what they did with me.
My thoughts are with you and again...try and stay busy.