Having had to take my temperature umpteen times a day for many months (during my chemo treatment), I have no problem remembering that it should be around 36.5C, plus or minus 1C.
However nobody here seems to have pointed out to Sandra that being bunged up and sneezing a lot, especially around this time of year, sounds very much like the symptoms of hay fever. One-a-day loratadine tablets are dirt cheap (£2.50 for 30 in Asda) and so might well be worth a try, in my opinion.