I experience chest pain after breast augmentation, why?

I got 400cc breast implants 3 years ago and I have a very small frame. The surgeon advised that I only go with 350cc but I didn't listen. I noticed that I get sharp pains in my chest area on the left-hand side towards my left breast. I underwent ECG and it turned out normal but still, I'm paranoid so I brought myself to the 2d echo clinic and got my heart scanned. I attached the result so I could get some feedback. Besides that, I have an anxiety disorder which I'm taking medicine for.