Thank you so much Clutter and Shaws - you are a very welcome, and much needed. life line.
I'm so grateful that you're there otherwise I dread to think what would happen.
I shall go and present my Doctor with all the information gathered from your posts and links and will let you know how things go.
Thank you also for the editing advise.
And thank you Glynisrose and Muffy for your very sensible advice.
Once more into the breach ...........