Ovarian cyst is quite normal in females at reproductive age.
Just go for a check up. If it's small, usually it goes away on its own or doc will prescribe some hormonal meds. If it's big, need surgery.

I've known of ppl who had cysts a few times in their life.

My small ovarian cyst messed up my hormones and body, was put on hormonal meds (birth control pills) and body is still slowly adjusting off the meds now since 2014.

2014. Nope. I took for only a few months as I didn't want to take pills that much.
Every month went back to check on the cyst. It went away after a month.