Weird twinge left side of chest up neck and shoulder. I m a woman, 40 years old, business owner, lots of stress have gained quite a bit of weight since I started the business (in the last 3 years) due to stress. I was in excellent shape prior to starting the business. I live in Arizona, very hot right now. I have been feeling lightheaded & a bit off the last few days. My mother just got over a virus with similar symptoms. But I worry now because of the stress & extra weight. And for the first time in my life my cholesterol levels a little bit elevated. I also have hypothyroid. Thanks!