Pressure washing yourself is not a good idea, frequent showers with soap are more effective.
Those stickers that show you not to wash your pet with a pressure washer give most an indication you probably shouldn't use it on yourself or the dirty kids! Then again, some just need EVERYTHING spelled out for them!
You're lucky it didn't cause more damage, you could easily have forced an air bubble into your bloodstream, that would spell disaster.
Sounds like everyone here needs a floatie with a BIG cup holder!!!!