I have been suffering from this for the last 25 years, once a week I get this bad feeling, it starts with a neck pain and it slowly moves to the front of my head, at the same time I feel like I have a heartburn and if I push on my intestines they feel sore. When I used to work, I would get this every Monday but a lot worse, I would get cold sweats and sometimes I would vomit my lunch in the afternoon, the only thing that improves it is taking 2 Alka Seltzers and the next morning it is gone. I was given anti-anxiety meds years ago, it helped but never got rid of it.