I had it happen, but it turned into lifethreatening. So, be aware which symptoms are telling you to pay attention. One of those cervical discs slipped into my spinal cord. No one ever told me that becoming paralysed is really painful. Just be aware, all those symptoms, like down your arm, especially, meant it was urgent and to find out what's going on with the discs in your back. I'm really glad you ended up without a lot of permanent pain from all this, and that you found exercises online that work for you, at home. I'm going to look those up! The end result for me was it also passed, the disc returned to it's usual spot, and the tingling, pain, and cramps all faded. It took a good 3-4 months of my life though. I am blessed that my roomie is my daughter and she's been with me as caregiver for many years. I don't know how it would be for you, but I use Cyclobenzaprine for various cramps. If it wears off while I'm sleeping, cramps wake me up. My left bohunkus and nerves there were damaged by a Chiropractor back in 2009, so there's some permanent damages I just have to live with. Another muscle relaxant is Tizanidine (not sure of spelling) they had me on first. I'd split them smaller and smaller and it still put me to sleep every time I took one, even standing up :).