do i have an ovarian cyst?

for a few months, whenever i run, dance or do any type of exercise, i can really sharp pains in my left ovary. sometimes i can’t continue exercising and have to stop, and the pain won’t fully go away for hours and hours on end, and will stil briefly hurt the next day. i’m 17 years old and i have been on the pill for about a year and a half due to extremely bad period pains. i have told my mum about it and she just thinks we should keep an eye on it for now, i would like some advice of what it may be and if it’s worth seeing a doctor for?