terrified

I am 29. I have a high risk hpv and have had abnormal Pap smears for 6 years. Two weeks ago I went to my pap and my gyn found a lump on my breast. I go tomorrow for a mammogram and ultrasound. I thought I was okay... or maybe just pretending. But I'm really just terrified. 
UPDATE: it went well. I am in the clear! Just fibrous tissue!!!!! WOOOOHOOOO!