Welcome to the board, Longbarb.
What does your vet recommend?
I was trying to remember how we handled it when Cole was neutered--he had problems, too, and eventually to reduce the swelling we had to have the fluid needle aspirated. He improved rapidly after that, but I can't for the life of me remember how long it was after that that he had the okay to exercise freely.
I do remember that we talked it over with the vet and followed his recommendation, though.