i had this too the other day!! dont worry its either allergic reaction to the tape or just from the tape rubbing on your sensitive skin, if u can make an appointment with the nurse for it to be redressed, that tape would be a nightmare to keep on for 7-10days especialy after getting blisters, i had lots ew, its meant to come off after 4! (if u have singh), i took mine off myself but left the bottom part on so it wouldnt remove my dressings too xx