Thank you I'm hoping it will be sorted soon. I have given him painkillers as he still had some left over (as I'm presuming he's in pain) and some antibiotics which he didn't need a week or two ago as just want it gone ASAP. Just feel guilty that it's got infected, I have been spot cleaning his cage everyday but obviously some bad bacteria must have got in there..I know infections can kill guinea pigs in days I just hope it's not too serious and I've caught it early.
Many thanks
With a good antibiotic and if necessary lancing any abscess, keeping it open and flushed for as long as possible you can get through it. Abscesses are pretty common post-op complications. They are by no means deadly.