Confused, pease help me.

Ka

Hey everyone. So I was diagnosed with pcos and I am very confused. My ultrasound shows I have cysts but my blood work came back completely normal. I am not overweight at all, I am very active, and I eat extremely well. I have the physical symptoms of pcos (cramps, missed period, light acne) but nothing except the ultrasound shows why it could be happening. I know its unknown but could it be anything causing it? My mother is trying to fight saying something else is causing them which is annoying but I’m trying to explain to her some people just have it. What could be my issue? I don’t know too much so I would appreciate input at any level!