Pap smear maybe cancer

Ja

I had a Pap smear done not to long ago and my doctor said I can back abnormal but matched kinda to people who typically have cancer. My mother had a hysterectomy at 27 for cancer detected by a Pap smear. I’m going on again in a few weeks to redo it just in case but I’m nervous. Can someone explain how they work or “read” the test.