Has GP given you anti inflammatories as well as pain killers? I had slipped discs in lower back causing sciatica. Also told to use ice packs (wrapped in tea towel) every 2 hours whilst lying down. Sitting tends to be the worst position so if you are watching tv could you lie on a sofa rather than sit on a chair. I also used a TENS machine (although this dulls the pain to make it manageable)
Read about transcutaneous electrical nerve stimulation (TENS), a method of pain relief that involves the use of a mild electrical current.
www.nhs.uk
I eventually found a very good physio who provided me a good home exercise plan which I have been using for 15 years which does help. I think you can self refer to a physio now (phone number from GP)
Obviously trying to obtain support is made all the harder when caring for someone and current times. I hope the pain does subside soon as I know how miserable it is.