Hello my love, I can relate to this totally. If you're anything like me your imagination can be your worst enemy; I personally can drive myself nuts on that "99% nothing to worry about" bs. I understand (mine is an ovarian growth, not a polyp) but it's all a huge worry. Here's two great things (a) you obviously live in an area with a relatively decent PCT (took me a YEAR and ugly hysterics to get to see gynae) (b) thanks to your hard work you are in MUCH better shape than you were two weeks ago and in 7 to 10 days you'll be even further along perfect for any healing options required!
Once again you have the right attitude - focus on the 100% SS, that you can control. Big hugs and kisses to you, stay strong and keep your PMA xxx