I guess you are using bongela or similar. Sometimes Matthew would like sucking on a frozen teething ring and that would be enough to send him to sleep. We had a rotten period at 11 months too.. and it lasted about a month! Not to scare you! If the high temp lasts I'd taking him to the gp just to be reassured. Matthew's top two took ages to come through - poor little guy. Hope he gets back to normal soon.