In despair!

Patient: Hello,I’m a nervous wreck!! I was recently diagnosed with High Grade Squamous Intraepithelial Lesion (CIN3). I am in need of surgery asap and the doctor is to do a conization pricedure, general anesthesia. Actually i thought it was better than spinal?Please I need some info. about this. Could this be cancer? If not, can the doctor still find cancerous cells upon surgery? What about my uterus? Could this be affected? Please I need some answers please!!! Thank you.