I just had my 2 year old male neutered and he is extremely swollen in the "sac" area. I took him to the vet today and they said he must be having too much activity. We only took him for walks around the yard on his leash. Has anyone else had this issue? Is it normal? He was neutered 5 days ago on Friday. I wish I would have read the post below before we took him because I think I would have changed my mind about having it done.