Thanks guys, time is moving quickly for me now since the lump became well behaved yesterday and is back to it's former size. Whatever it is, it's capable of getting sore and inflamed if not left alone, so that reassures me, with my lack of medical knowledge to contradict it.
So as I'm feeling much better about it, I'll tell them about the other meds if it turns out to be cancer, otherwise I won't.
CLKD, what are the long term outward signs of opiate use? I didn't know that, I'm interested because I know two people who kept it hidden from outsiders for decades, now out in the open as the world gets less judgy about these things and they both had recent health issues, which is probably the real reason. Noone noticed for over 20 years! I've been on and off it on repeat for maybe ten years now and I don't see the problem either, except I don't want to get in trouble with it, but in my experience people who are going to get properly addicted do it fairly quickly.
I'm more fearful of pregabalin in many ways. Coming off morphine is more a physical challenge, while pregabalin is just as big, it's mostly in your head, unpleasant doesn't begin to describe either and they might want me off them both for some arbitrary reason in a rulebook that won't even affect my outcome.
Do pub toilets have better phone numbers than the internet? I don't often drink in pubs and I haven't noticed any, maybe they are online these days and spend less time defacing private property?

The numb arm is radial nerve damage, I saw the GP again this morning (they are seeing patients face to face for the first time since the pandemic but only allowing one problem per visit), she says I can have a blood test at the end of the month to see if I'm low in anything that might cause it, after that we'll try imaging resources. By then I'll know if I have cancer as well.
Last year it was possible to get a blood test done within a week, now it's over 2 weeks wait, that's what happens when they start seeing patients again!