Ouch! I have had abcesses and they hurt! I developed 2 abdominal abcesses after resection surgery and had to wear a drain for 4 months, and then recently had a peri-anal abcess that was very very painful!
I felt that the pain from these was worse then any pain I had for my Crohn's and recovery was harder then it was for any other surgery. I am not sure why they are so painful but it was awful!
Good luck and take it easy!