I'm also sorry, numan to read to read of your problem particularly as it is your work. Is there a common denominator that links to the occurrences? A particular plant for example? For if you handled a plant and then rubbed the bridge area of your nose as we are wont to do when the eyes get tired this may be the cause.
My wife was involved for many years,with commercial floristry and horticulture, with no problems at all then seemingly out of the blue, she started getting reactions rather like yours but very, very slight. She did a self analysis by deduction and came up with several plants that gave her an allergic reaction.Now she avoids them or wears gloves and has no problems-until she forgets!! It needn't be a plant but hopefully you may find a common thread. Who knows you may have solved it by the time your appointment comes along.