strange syptoms...no answers

[Denee']

I need help, please!  I have been having these symptoms off and on for almost two years.  They seem to be more frequent.  The only common denominator is it happens mostly when I am very tired.  I am 42, never had children.  I have severe endometriosis.  Mentally very stable.  Happy most times. 5' 6" and weigh 150lbs.  I had gained almost 50lbs. after a bad accident which resulted in 10 months of physical therapy about 5 years ago.  I have changed my diet and started back on an excersize program, where I have lost 12lbs. recently.  I recently had surgery for kidney stones, but these sypmtoms have occurred before surgery.  Here are my symptoms...short of breath,  heart feels like it is flip floppiing in my chest, get diahrea...sometimes severe. Shaky.  Feel like I am going to pass out or worst die at times.
My original general practioner basically told me I had strange stories.  I finally found another doctor I love...he has run many tests including complete basic blood tests, EKG, stress test, and I wore a heart monitor for a month.  He put me on Celexa 20mg.  Helped maybe a bit.  I think I was stressing over being afraid I was going to have these symptoms again.  But, they kept reoccuring.  My parents thought maybe I was having panic attacks.  I find it hard to believe, because it happens mainly when i am tired or have bee working a lot.  My Father gave me Xanex to try, as well as my Dr.  I take a half of one when I feel like this.  It relaxes me some to where I sometimes can rest, but that is it.  It doesn't stop symptoms.  I am getting very worried.  The physical feeling are overwhelming to say the least.  It just happened again after two days of long hours at work.  I went straight to the Dr.  He did complete blood work, EKG.  The EKG showed I was having extra heart beats, but he felt they were benign.  I had previously been diagnosed with irregular heartbeats almost 9 yrs ago.  I took time off of work, but nothing seems to help.  I changed my diet.
Does anyone have any suggestions...tests to have my Dr. try, etc.  I am willing to try anything at this point.  It is scaring me.  Could it be my heart, thyroid,?????  Any suggestions would be appreciated.

[tmv]

With all that was tested and came back ok, I would lean towards anxiety. You don't have to go into a full blown anxiety attack to have a need for meds. I would suggest having the dr switch meds and see which ones would work best for you. I had similar symptoms, thought since I am a nurse that for sure it was a heart problem, also my sister has a rare arrhythmia. Anyways, long story short, I am on Lexapro 20mg everyday and have not had any problems in almost 3 years. It is so hard to realize that physical symptoms vary from person to person with anxiety. I even had a tightness in my chest, sometimes down my left arm. Anyhow, that's what I'd suggest, a anti-depressant from another group. Best wishes. Oh, my "flip-flops" in my heart are so unnoticable now. Occasionally, I feel a couple, but nothing at all like I felt it before. Seratonin and norepinephrine play a big role on how pain and sensations are felt in your body.

[Maggie2007]

My first thought was "is it her thryoid?"
I'm not a doctor, but I've read a lot on hypo/hyperthyroid since being diagnosed recently. I would ask your doc to check you thyroid functioning.
Hope you feel better.