All of a sudden I'm laying on my left side and I get a severe pain,  this has happened a few times and lasts for days.  I can't lay on my left side at all.  Its not anxiety, heart issue.  Doesn't go away,  just gets less painful when ilay on right side. It is not gerd, heartburn.  This pain is extremely sharp at first then a burning achy pain stays until I laydown, then its back with a vengeance.