Hi, I have the following issue. A month ago I was in aqua park and I used one of the toboggans. When i got down at the toboggan, i felt a lot of pain under my legs just below the scrotum meaning that I got hit by water and i got hurt because i am also overweight. At evening i noticed that this place was red and somehow kind of bubbles in dark blue color. Now after one month, i checked again and is still the same. It looks like vein blister, so can this be that or maybe something else, or do I have to see the doctor personally? Please help. Regards.