Hi, I am a 51 year old female. I started with some light headedness. Then I had some pressure in my throat. A few days later I felt like I had this round ball of pressure in my chest and it was hard to breath. I did not fell upset or tense at this time, that I of can recall. With  this I became very lighted headed to the point I thought I was going to pass out. My blood pressure is always 104 over like 64. It did not seem to start untill my youngest told me she might have breast cancer. That has been taken care of. The symptoms seemed to slowly be backing off. The doctor now wants to do a heart cath. I not sure if I should put myself through it. I forgot to mention I feel drained of and on.