Ovulation and pain

Im 42, for about a year maybe 2 I've been feeling a dull/sometimes sharp pain on the left side of my stomach everytime I ovulate. And normally the only thing that helps relieve the pain sometimes is when i go to the bathroom to 💩. When I'm done ovulating the pain goes away instantly and then comes back next month. Its so uncomfortable and takes a toll on my mental. I do have a simple cyst on my left ovary, could that be the cause of it? Does anyone else go through this? I'm so tired of this pain... just need some guidance. P.s I am going for my internal ultrasound tomorrow morning