I am 3 weeks post RP and had the catheter out last Friday. I found the catheter very uncomfortable. On the basis that the medics have found nothing wrong, I found that drinking lots of water helped, along with walking or standing. I was also careful to keep on top of the pain meds. I found that sitting down was more uncomfortable than standing. You should also make sure that the catheter is strapped up properly, especially the thigh strap. If the catheter is pulling or hanging loose it will hurt.
It is horribly uncomfortable but after 10 days you are probably due to have it out soon. Best of luck.