Can a pinched nerve cause severe tooth and jaw pain?

Last week I was sick with the flu and spent a lot of time in bed, clenching my teeth in my sleep and sitting/laying in awkward positions. One morning I woke up and on one side my shoulder and neck were very sore. Later in the day it felt like all the pain and tightness moved to my teeth and jaw on the same side. If it sit or move in the wrong position or put pressure on my neck in any way at all, even laying down to sleep, it feels like my face and jaw begin to cramp. It hurts in my upper and lower teeth on one side, and it even feels like my tongue muscle is being pulled downward. It feels like a nerve is being pinched or compressed near my jaw/neck. The pain is excruciating and brings me to tears each time. If I stand up and hold my head up straight the pain slowly subsides. I had the same thing happen last fall but my oral surgeon just said I had TMJ, and the episodes of pain went away on their own after a month or two. Can that actually cause this type of pain? Eating and talking don't seem to affect it, only my posture.