Started with twitching of right lower eye lid. Now tightness in chest. Was to the point where I felt like I couldn't breath. Like something was sqeezing my chest. The pain went across my right side under my breast to my right shoulder. This was 4 days ago. Went to the ER. Heart is ok, muscle spasms? That is what I was told a year and half ago. This time was different, really intense sqeezing and that really scares me. I thought maybe my posture, being overweight, lack of exercise,and stress were and are contributing factors. My lower rib on right side is tender discovered that today. Wish they could do something for me.