Any last ideas?

Hi again everyone, Thought I'd post here one last time to try and get some ideas, or realise that it's time to give up on trying to find the cause of my symptoms.
I'm 21, no history of medical issues, and Just over a year ago, I went into A&A with sharp pain in my chest, they did an ECG which they said showed 'slight abnormalities' and blood tests (never got told what these showed), diagnosed with pericarditis and sent home with ibuprofen, nothing changed & since then my symptoms have gotten worse and more widespread. At the moment, I get a pressure like feeling in the left of my chest, sometimes a shooting stabbing pain here and there, I get a numb jaw, and a horrendous aching pain in my left arm only, pain is made worse by exercise & caffeine, I also get frequent palpitations. So over the last year, I've had 9 ECG's (one abnormal, the rest normal), 7 blood tests (all normal as far as I'm aware), an echocardiogram (normal), an ECG stress test (normal), a CT coronary angiogram (normal) and an ultrasound of my liver (normal), unfortunately docs have now branded me with the anxiety label which is on all my med documents, so whenever I visit a doctor now the first thing I get asked is "so how is all this making you feel" and they keep prescribing me antidepressants which I don't want to take, I've never had a history of depression or anxiety.
I just can't escape the worry that my heart is causing the problem, despite all the tests. And I'm really not sure what else could cause my symptoms.
Any ideas or advise would be much appreciated

I agree with Sharon. I had a Pulmonary Embolism last year that came with similar symptoms to what you describe (jaw pain, stabbing shooting chest pain) (not that i think you have this there are many symptoms you don't have and it definitely would have showed on the tests). One of the hardest things about recovering from it was having these symptoms reappear and not knowing whether they were a sign of something serious and caused by another medical problem. My doctors encourage I tell them every time it happens yet every time since they have been absolutely nothing. So you can be perfectly healthy and have those sorts of pains. It can be very hard to tell sometimes and and having a medical problem can leave anyone with a lot of fear of reoccurrence so it would be normal to have anxiety about that, however the tests should alleviate that fear since they have all come back normal. You need some trust in your doctors who seem to have done a rigorous investigation. You need to be proactive about this and eliminate the things that are triggering these episodes like the caffeine which is probably adding to your feeling of worry. Also find someone you can talk about it- you have a legitimate reason to be anxious- why not ask your doctor to speak to a counselor or something similar instead of taking medications? Just being able to check in with someone about your experiences might help alleviate some of them. It's amazing what the mind and body can do to each other