anxiety/emotional responses/frustration

Yet again another vicious cycle and physical symptoms. Heart palpitations at it again. I don't knowwhy the slightest emotional reponses set it flipping around in my chest. It does not beat right. I can be online, maybe slightly anxious-nothing to worry about and yet it starts in skipping around, irregularity. I do believe that at leat 50% of my problem is subconcious. But I don't know what I am thinking to make this happen. I know my social anxiety causes me some computer anxiety. I know rationally there is nothing to be afraid of, but deep down I think I am afraid of what people will think. Whenever I get busy on that popular site, YouTube and I start posting videos or comments, my heart starts flipping around again. On the surface I am rarely thinking-"I'm afraid" "What will people think?" and all that blah blah. But I can't help it. The slightest emotional responses deep down start this process I call mental torment. Thats why I had to quit work. Would YOU go to work daily if your heart kept flipping around and you felt like you were going to have a heart attack. It is the most distressing thing I have to live with in my life and is about 50% of why I avoid anything stressful such as a job, performing tasks in front of others and anything that I feel I will be ridiculed or scrutinized. Even if I am relatively calm, it doesn't matter. My heart will find a way to get involved with the anxiety which in turn makes it even worse. If I weren't so afraid to go to a doctor for the heart thing I would but I am terrified beyond understanding. As I write this the palpitations come and go. Seems writing this makes it worse and yet on the surface my anxiety is only from a scale of 1-10 on about a 2. I love gwtting online and posting in forums and I don't alway feel anxious on the surface but my heart proves it by doing it's acrobatic routine. It's even 2-3 times worse during PMS and I know that there is definately a change with the hormones and chemicals in the brain that trigger those things. That is another reason for a cranky woman when she has PMS. The chemicals in the brain get altered causing different emotional responses. You know what that means... Stay away from the wife/girlfriend/daughter during her PMS... she might bite your head off. Even when I can be humorous online I still get the heart palps. When I get off and go relax most of the time the symptoms subside. If I get up the nerve to check into this maybe I will have my questions answered and wonder how much the heart is really affected by our emotions. I know it does. Why didn't they find anything wrong with me in the ER? That time many years ago. Because the symptoms left after I was on the monitor so it could not pick up anything-is my guess. Well, what do they really know?