Allergies driving me made! Advice please

[whymewhyme]

I suffer from hay fever but I'm also allergic mould and bad dust. I have one antihistamine a day and I'm fine.
This has changed in the last month I am suddenly waking up with really bad allergies! Sore itchy puffy eyes streaming nose itchy throat and abit chesty.

Just to add. My mattress is under a year old with a mattress topper on top with a removable cover, I wash that once a week and hoover the mattress weekly also, I usually wash my pillows once every month but I've recently binned them and brought new ones at the weekend! I dust my room once a week.

Just wondering if anybody knows why this could be happening?

[Gwynfluff]

Do you use a nasal spray? If so which one?

[whymewhyme]

No I don't use a nasal spray, just the tablets