Good Day! When Im 16, My Doctor Requested Me To

Good day!
When im 16, my doctor requested me to have a ultrasound due to my abnormal mens. Base in the ultrasound result/remarks it says
The uterus is anteverted with regular contour and homogeneous myometrium. There are no myometrical masses seen. The cervix is closed and homogenous. The endometrium is thick and hyperechoic with intact endomyometrical interface. Both ovaries are leteral to the uterus and contain more than 12 subcapsular follicle measuring less than 1cm diameter with dense stroma. There are no adnexal masses seen. There is mo fluid in the cul de sac.

Please help me understand my ultrasound result. Because my ob-gyn says i have a ovarian cyst.