Does this sound like an ovarian cyst?

So my ovulation time was supposed to be last week, but I took plan b 4 days before ovulation so who knows if it happened.

All day today I’ve been experiencing pretty bad pain in my right ovary. Like uncomfortable to the point where it’s very noticeable. It’s pretty constant as well, and if it goes away it doesn’t stay away for long.

I usually have slight ovary pain before periods, but this seems really weird! Can anyone share a similar experience? Does this sound like a cyst or something else maybe?