(I was rocking with laughter reading the original post eccles, but seriously not helpful, I know)
Ice it like mad for 20 mins at a time every couple of hours from now tonight and don't put plaster on it, or anything else.
Get some high strength vitamin e oil in capsules tomorrow, prick a couple and spread them on the wound three or four times a day rubbing in gently for the next week or ten days. Cream is a waste of time.