Hi Ennie,
Sympathies ... this is not a pleasant issue. I had a bout of it earlier on in the year. My GP said my ear drums were 'dull' (instead of shiny) ... so mucus in the middle ear ... I had antibiotics, nasal sprays, decongestants and in the end I got some nasal balloons ... Otovent ... available on Amazon for about £10 ... problem sorted out in less than a week. I do however use my balloons once a day to keep my ears clear and once a week or so I use NeilMed nasal rinse (I'd been using this 3 times a day) .. I've been grand ever since and all this stuff is natural ... no medication so you can fly with ease!
Hope this helps!
Kind Regards,
Cath