edema

Hey Guys, I was circumcised 18 months ago, ever since I get edema underneath my glans when ever I do PE. I have been vac hanging every morning and then extend all day, then mityvac 5x5x3 at 9hg followed by c ring for 1 hour. I’ve recently started using a compression hanger instead of the vac...

Everytime I use a vac sleeve type Stretcher I get the swollen like edema. What causes this and how can I reduce this. I could wear my devices longer but eventually the swelling becomes too much and looks terrible.