magso, I haven't been to the GP this time. It feels like there's no point.
Sleep is an issue. I need to get a lot more of it, but got into the bad habit of using co-codamol to knock myself out as I developed insomnia, I think through anxiety around bedtime, worrying about whether or not I was going to have another night-time episode. I'm off the cocodamol now, but sleep still isn't great. I either sleep like the dead and wake up feeling worse or struggle to sleep at all.
Spinal nerve compression theory is interesting. I had a serious neck injury when I was 18. Ridiculously, it was caused by doing a workout. I turned my neck too far when my dh (then boyfriend) walked into the room and two of my vertebrae popped out and kind of got tangled up. I was stuck immobile for 6 weeks, even having to be carried to the bathroom etc. Then when I was in my early 20's I kept having bouts of torticollis, where my neck would seize up and lock with muscle spasms spreading down my spine until eventually half my upper body was frozen. It was so painful, but noone ever investigated it, I just got given a standard foam neck-brace and anti-inflammatories. My neck is very cruncy-grindy and still locks up sometimes, but I haven't had the torticollis for years now - thank goodness. My osteo felt the neck issue was a very likely suspect as a cause of my migraines.
raggedy yes, I still had SPD quite badly between ds1 and ds2. It did improve when I stopped breastfeeding, but the only thing that really worked was the osteopathy. I had the course of treatment when ds2 was about 6 months old, iirc and only had a very mild case of pelvic pain when I had dd 4 years later. I still have the odd issue if I do something daft like try to use my foot to scrape a bit of dog fur off the carpet (sideways leg sweeping motion) but I suffer from far more hip pain than pubic pain these days.
Yes the nerve conduction test was agony, not least of all because the guy ramped up the amps or whatever they're called because he couldn't get my left foot to respond. According to my neuro the results were normal, but I find it very interesting that it was the foot that developed complex regional pain syndrome just a few months later that wouldn't respond to the pulses.
Unfortunately, they picked the time to my MRI, LP and nerve conduction tests when I was at my most fit and healthy after months of concentrated effort on healthy eating, exercise and supplementation. I was actually fit enough to be doing interval training 6 days a week, had lost 4 stone in weight and was solid muscle. I think that's what's making this relapse (although in all honesty it has been more of a gradual decline over 12 to 18 months and then being tipped over the edge by flu) so hard. I can still remember what it feels like to be fit, clear headed and full of energy. I mourn it to be honest and can't face the uphill struggle to get there again. I feel like all their blooming tests robbed me of my health and now I'm back at square one. 
I honestly don't think I am diagnosable, I'm just a physical and as a result, mental wreck. There are just too many things wrong and no-one wants to view the problem holistically to see if there's a common cause for the majority of them.
Sorry, I am feeling really sorry for myself just at the moment. I'm not normally like this, I promise. 