Where did you have it done. I never had hayfever/allergies as a youth so it took me a while to realise in my early 40s that the symptoms I had that were:
- like hayfever
- happening in hayfever season
- treated by hayfever treatments
were probably hayfever.
I now think it's not actually hayfever but tree pollen allergy (earlier than grass pollen) but this is all guesswork, Google and pub chat. I'd be interested in doing a proper test but can't help thinking this is an area ripe for charlatans.