Judy,
I guess the good news here is your 2 hour reprieve from the neck brace.
I've read many posts of minimal findings with maximal symptoms and the opposite too. 'I'm in so much pain and my doctor can't find anything wrong' happens too often. Though some doctors should not be practicing, others, while not dismissing your pain, simply don't know what's wrong while still others might pinpoint the problem. Some claim your injury couldn't possibly be the cause and others say that's your problem. This is why second and third opinions, especially for drastic or invasive surgeries is always recommended.
BTW, a similar symptom of almost all back patients is tight hamstrings. Your symptoms also sound nerve related, thus the EMG.
Medicine shouldn't be a hit or miss but often, that is the result. The variation of competence among health care professionals is amazing but I digress. So far your test results don't back up your pain which can mean several things. So, further investigation and second opinions are warranted.
Don't you wish you could trade your spine in on a new model?
Dale