Thanks for all your good wishes, the dressing is off and the stitches are dissolving.
I rang my AME yesterday and he said basically what Foggy said - call the CAA and report it, they will send me a letter temporarily suspending my PPL, they also need a letter from my surgeon or GP discribing what happened to me. My AME wants to examine me in a month and at that time if things are OK, he'll sign me off as fit.
I'm not allowed to fly at all during that 4 weeks, its because any air introduced into my abdomen needs time to disperse and any altitude could cause me to f4rt through my wound! Also I might inadvetently pull some G, which could strain the wound too.