i take nexuim also.. it causes anxiety..and my pain is exactly like yours.. the dizziness scares me.. and the ringing in my ears..
Your symptoms sound a lot like mine back in July 2005. I ended up in ER a few times because I thought I was having heart attacks. Each time, they took EKG and found nothing wrong. My doctor said it was anxiety/panic attacks. I did my own research to find out what was wrong with me and in Oct 2005, I requested a mercury test (blood test). My elevated mercury level confirmed my suspicion. In July, my dentist drilled out a big amalgam filling and deep cleaned my teeth. I must have ingested some mercury or breathed in the vapor. I was in perfect health before then. After that trip to the dentist, I started to have problems with my heart, my stomach (GERD)....I still have a lot of silver fillings in my mouth, and every 6 months, when I go in to have my teeth clean, my symptoms flare up worse. I learned alot recently by reading a book about amalgam illness by doctor Andrew Hall Cutler.
I'm not sure if you have any fillings in your mouth, but if you do, maybe it is chronic mercury poisoning. When it first happend to me, I could not even walk in the store for more than 30 minutes without feeling tired/fatigue and had to sit down. I started to take supplements, and that helped. I'm also taking the Mangosteen juice sold in Costco or Sams club (1 or 2 oz a day). I have to say that juice gave me my energy back. It does not hurt to try, and it is all natural.
Hope you feel better!