Hi, I have a very peculiar version of hay fever. Extremely itchy eys but no runny nose or sneezing. However I do have a strange cough as though I'm trying to clear my throat all the time. BTW I developed hay fever in my late 30's. I now take Fexofenadine after trying all the "over-the-counter" treatments, and it's brilliant. Have a visit to your GP. I don't think you're supposed to ignore persistent coughs anyway.
Saw gp in April, was not infected. Eased off but never really went away, but has got worse again this week. Still coughing up but I know its not infected so was wondering about hay fever rather than virus.