Hello, I have been having pains on the left side of my chest for quite some time now. We have investigated with my Dr by having a breast ultrasound which at first found a lump but then the 2nd time that I went to have a biopsy they couldn t find the lump anymore. Also months ago when I first had a really strong pain on the left side of my chest I had an ECG done and a blood test and they couldn t see anything, then I also had a chest x-ray which didn t show anything up either.. this was probably about months ago. In the last 6 weeks or so the pain is getting much stronger and more consistent, I especially notice it when I turn my upper body or take a deep breath, also when I am lying on my stomach at night to sleep. in the last couple of weeks it is getting worse and worse,