I was awakened in the night with severe chest pain and tightness that also went into my neck and jaw. I thought I was having a heart attack. This has happened twice before over the last couple of years. It always awakens me during the night and eventuallly dissipates after an hour or two. I thought it might be esophageal spasms, but I don't have the feeling of food backing up or anything stuck in my throat. Any ideas?