Thank you, BradfordLass. I am using NeilMed sinus rinse at the moment (the kit comes with sachets of a saline mix which shouldn't sting, and a squirty bottle for making them up with cooled boiled water), but the term sinus rinse seems to me to be inappropriate because it doesn't get in there. But I will look at the one you mention.
Yes, and I have Flixonase as well. I agree about the foul taste.
The back came on this time after I put myself to bed for a couple of days with a nasty fluey cold that worsened the nose probs. My go-to back fix is a set of physio exercises, but it was too bad for that, and I was advised to 'take things very gently'. I had to stop being Grandma and be poorly me!
In my medicine cupboard I have a stash of things prescribed for recurring ailments, and I renew them on line so I don't actually see the GP often. I was hoping to work up an argument for talking to a consultant about the sinus/post-nasal drip, but then read that it can be caused by the acid reflux. So I was wondering if I should focus on that instead. I saw a consultant in May 2017, after an endoscopy, and was advised to lose weight (I am now a stone or so lighter, and my BMI is under 25), but I don't think I mentioned the drip then. Sorry, I am rambling.
I am grateful for your sympathy and suggestions, particularly the idea of eating earlier and lighter. Will discuss with DH.
Look after yourself. ? (hope that represents appropriate use of a tissue, not profound grief!)