severe anxiety caused by Metoprol or Prevacid ?

I was originally put on Metoprolol 25 mg per day due to a high heart rate & throat tightness after taking thyroid medicine for three days and a subsequent emergency room visit. Xanax was then added, as well as Prevacid. (Xanax 3 x per day at 0.25 mg & Prevacid Solutab 30 mg per day)

I started to feel better and had halved my dose of Metoprolol to 12.5 mg per day at night while still on the other two meds above.
My monthly cycle started and so did the symptoms again, this time worse. The heart rate increased, terrible anxiety accompanied, vomiting,
strange dreams, etc. I ended up in the Emergency Room a second time two weekends ago. They could only rehydrate me and give me something for nausea that did not work. This resulted in me having to double the Metoprolol and increase the Xanax to 0.5 mg three times per
day to get through the day.

I have now reduced the Xanax to 0.25 mg twice per day and 0.5 at bedtime. I have also reduced the Metoprolol again to
12.5 mg at night. The Prevacid remains the same.

THAT SAID.....I have been experiencing TERRIBLE anxiety. It starts when I wake up (if I am able to sleep) AND continues all day. It gets worse at night before I take my full Xanax. My throat gets tight sometimes, I have
trouble eating, I do not want to be alone, I am uncomfortable in my own skin, my heart rate is high, I get very nauseated, etc. I experience some releif when I take the Xanax, but the few hours between when they wear off and I am due to take them again are HELL. I am also concerned about addiction to Xanax.

I started reading information that people posted on askpatient.com today regarding side effects they experienced with Metoprolol & Prevacid. The occurences of Metoprolol seem a bit higher but they both seem to correlate to my symptoms.

SO...I am wondering if anyone has had similar experiences. Could the medicines be causing my severe anxiety? Any insight you can give me would be GREATLY appreciated.