Cyst over ovary

I have a 7 cm cyst over my right ovary.I have had so much pain maybe since my son was born little over a yr ago.I probably will be having surgery next week.The doctor said if the cyst is really bad they might remove my right ovary.Im more scared now after reading stories from the internet.I have a 2 yrs old going on 3 and a 1 yr old worried about them after i get the surgery.