Talk to Gynecologist on Gynecologist

Asalam o alikum I am 21 years old unmarried and and I haven't gotten my periods for 2 months, since last month I developed this pain in my left breast due to ramzan my gynac was out of town I am a constant self breast examiner myself, I make sure to self examine myself atleast twice a month and I felt no lumps or anything except the pain. So few days ago I visited to my gynac she checked it through and pressed it super hard and said that I can feel multiple small size cysts and now I am scheduled for an ultrasound tomorrow. I am so scared what if it's cancer?