I have just started the stretching and jelqing exercises.and I am having a hard time knowing just how much pressure to apply. After my exercises last night I have a dark purplish “band” around my penis, just below the glans (head.) It looks like a bruise, and it is the second time it is happened.any suggestions/reasons why this is happening? Am I using too much pressure, or milking too high? Also, did all of you vets do extensive stretching combined with jelqing at the beginning? Do these cheaper “homemade” stretching devices really work? Any info would be greatly appreciated.