I wrote for advice recently before seeing my GP recently as I have been through DAs and Gabapentine and Pregabalin. Thank you to all who responded.
He has suggested Tramadol which I am starting tonight - let's see what happens this time! I really hope it works as I was up until 5am walking up and down and bouncing on an exercise ball. Any hints and tips for being on Tramadol would be grateful received.