Probably were fentanyl: very strong and potentially lethal.
Paracetamol never helped any kind of pain for me either; it was only of us for things for which I'd not bother with tablets...
Make sure your pillows support your head well.
I now have 6 pillows so hope that will give some relief.
Diapason - I am allergic to Dihydrocodeine and wouldn't be able to funciton on Gabapentin. I took Carbamazapine for a short period of time for Trigeminal Neuralgia and I spent half of my day asleep.
I have a high pain threshold so will survive this and will do the hot packs throughout the night.
Tim - I got someone to apply stuff to my shoulder and neck today. It isn't the side I had surgery.
If it hasn't improved by next week I shall see the physio.