Jess ran into some unusually high readings recently with her pump, we suspected that she was coming down with something but we also did the usual pump checks, changed the insulin cartridge in the pump and changed the infusion site. When I took the old cannula out the infusion site looked a little red but nothing too serious. A couple of days later it was looking pretty red and nasty and was about the size of a 50p coin. Being the start of the weekend our gp surgery was closed so I put some hydrocortisone cream on and decided to wait and see if it would help. By the next day it was forming a head and later that day it burst and some puss came out. Put more cream on, twice a day and after it had burst it started to look better with the redness subsiding and the infected area gradually getting smaller. This morning there is still a red patch but much smaller and no signs of puss or a head forming again, I would say it's looking much better and seems to be healing. I'm keeping the infusion sites well away from this area and am still putting the cream on twice daily. The thing I noticed today is there is a lump underneath the infected site, not huge but definitely can be felt when I gently push my finger over the area. Could this have been caused by the insulin puddling up in this area and not being absorbed properly when it became infected, will it go away on it's own with some time or should I be getting our GP to check it even although the infection on the skin surface appears to be healing? I guess I'm asking if anyone has experienced anything like this before and did it go away on it's own or was some sort of treatment (antibiotics) necessary. Another question is that we were never told to prepare the skin with any sort of antibacterial wipes before inserting the cannula. Jess will bath and wash with ordinary soap before a set change. I'm wondering if it would be wise to treat the area with an antibacterial first from now on to avoid a repeat, it's the first time we've had a problem like this since pumping for a little over a year now.