Just the lower jaw, and just on the right side. I usually sleep on my right side, so I'll try sleeping on my left tonight.

I don't think so. I've been surprised at how easy it's been to sleep with my mouth closed, actually. I might try picking up an over-the-counter mouth guard just to see if it makes a difference, though.

Hi everyone. I just left a message on my doctor's voicemail about this, but I figured it couldn't hurt to get opinions here while I wait to hear back. I've been using a CPAP machine (with an ESON nose mask) for about a week. For the past few nights, I've been waking up with pain in my jaw. I've trie...