Willie and Tony, when I read stuff like yours I feel like a fraud. I have a prolapsed disc at C5/6 with nerve root compression and another at L5/S1 likewise(they aren't doing anything with that). I also seem to have some minor (?) thoracic problems which they won't look into (expense being the issue).
I've had 2 MRIs already, one both lumber and cervical and the last one just cervical. The first MRI ( a few years ago) showed the cervical prolapse to the right, whilst the second showed a central bulge impinging on both sides; I guess something has moved. I have coldness, pins and needles, muscle spasms, weakness etc in both arms, back and legs which can vary not only day to day but minute to minute. Sometimes if I jar myself I get pins and needles in my face too. I also get sensations like electric shocks down my ribs, abdomen and occasionally my legs (as well as some areas I won't go into!), and have various other symptoms I won't bother expanding on. The consultant doesn't think the last MRI shows sufficient compression to explain my symptoms, hence the myelogram. Willie, you're the 2nd person I've spoken to in 2 days who's had one who has advised me against it, which is somewhat worrying! I had got to the stage where I was struggling to use my right arm, hence my referral, but I've recently been going regularly to a different chiropracter and it seems to be helping no end; not a permanent fix I guess but it's keeping me ticking over, although I still suffer some pain and very occasionally walking is hard work (although other days it's fine). Wearing a bass for any time is a struggle too. i must admit though as my symptoms have currently eased I can't help wondering if it's worth it, although I'm aware of the fact that that could change anytime.
Regardless, my problems are utterly insignificant compared to what you've been through. My thoughts go out to you and Tony (and anyone else with such problems)and I hope you get through everything ok.