Advice on meds please

Hi wondering if anyone can help please? Has anyone been prescribed Sativex or nabilone for symptoms of MS without a diagnosis? I take morphine and it no longer seems effective Plus GP wants me off it, I don’t want pain patches again and the above meds are too expensive privately. I have spasticity muscle spasms etc particularly in my legs I also have Ehlers Danlos syndrome & epilepsy, these meds would mean I don’t have to take up to 20 tablets a day but that’s if I can get them here in the UK. Scotland ana Wales have no problems they seem with prescribing them.
Thank you in advance