I had the same surgery for the same reason (except there were three lovely potatoes growing on my ovaries instead of just one). Turned out to be absolutely benign but nonetheless painful at the time.

I was not quite as active then as I am now, but still pretty fit. I took it really easy the first three days after surgery. Anything involving core muscles was painful, although not terribly so. Laughing was really the worst though, because of the belly-button incision (for the camera).

Fourth day into recovery I was feeling in spectacular shape, tired of staying at home, and had the "good idea" of getting some groceries at the farmer's market almost a mile from my house. I gingerly walked to get there and back (with a pretty big load of groceries)... and I paid the price for that meal. The next day, I was in awful pain (everywhere but my middle section) and feverish, and because infection was a real possibility I had to return to the hospital. Stupid ER doctor squeezed my ovaries (why did he do that??) which caused the pain to my middle, and diagnosed me with constipation. (Which was not a problem at all.) I escaped from the nurse who arrived to "help" me with the bowel "problem" and returned home mad as hell, and although tired and sore the next few days I turned out fine.

Bottom line is: you're probably going to be told "10 days rest." Take those 10 days off. Don't think "I'll just go for a ride around the block" if you know you'll go for 10 blocks not one. Go back to exercise progressively and listen to the doctor.

Good luck!