I have been having a pinching pain on the side of my left breast and in towards my underarm. The pain comes randomly, sometimes can last seconds and sometimes can last minutes. It is a deep pain. I usually notice it while I'm sitting down. I went to the doctor, they gave me an EKG and lots of blood work, everything came back great except for my cholesterol was high. I just turned 33 years old and my cholesterol was 235 but my high cholesterol was also high so she said she wasn't worried. I am still scared that I'm going to have a heart attack, but all my blood work came back great besides the cholesterol. I do have a lump in my left breast but I'm getting it checked on Wednesday. I am worried that I'm going to drop on the floor and have a heart attack. I am not depressed, I do not have anxiety, and I'm not stressed out. I'm just not sure where to go from here. If the breast ultrasound comes back okay what should I do next I don't think running on a treadmill at the doctor's office is going to solve my problem. I am 5'1, 112 lbs. Thank you