For the last month, I wake in the morning with a very stiff neck (can't turn to left) and my face and body are extremely swollen. No change in diet.

Hard to say. Your swelling concerns me the most. Whole-body swelling can be caused by heart-failure, liver damage, kidney failure, and certain medications, among other causes. With the combination of neck pain and swelling, nothing specific comes to mind. Please see a provider who will do a good physical exam and ask you more questions to try to figure this out. You deserve an answer!