Stretch Riding Jeans

About 5 years ago I went to Six Flags and that day I wore jeans and got a blister on the inside of my thigh after riding one of the water rides and getting soaked. It was half way through the day so I dealt with it the rest of that day and the next when we went to a water park. It was really bad and took a several weeks to go away. Once it finally went away there was still a mark where I had the blister, like the skin was stretched. It hasn't bothered me all these years so I never thought much about it, but I just went to Disney World for a week and on about the third day it started filling up with fluid again. Since Disney it has bothered me because it's like a huge bump, but it's just a blister. It doesn't really hurt or anything, I'm just wondering whom I would see if I decided to have it drained or whatever. I'm just not really sure what to do about it or just give it a while to see if it goes away again.
The blister never burst. My body just natually absorbed the fluids.