ovarian cyst while pregnant?

Mackenzie
At my ultrasound I was so happy to see a little bean measuring 8 weeks with a solid heartbeat, but then my doctor showed me I have a golf ball sized cyst literally stretching out my ovary. He said it should pass on its own. I'm my experience with them, they hurt really bad and cramp. I'm scared this will affect the baby. Has anyone else had this happen?