@kawaiipanda700
yes. It can come from a number of things. I had it when I had bronchitis and it does feel like a heart attack lol. I went to the ER and told them i felt like I was in cardiac arrest.

@techie_grrl okay thanks for the advice I'll look it up.

Look up costochondritis. I had it really bad with both my pregnancies, and could have sworn I was having a heart attack every single time. To be fair, I have a long list of medical problems and inflammation seems to be a constant for me anyways, but this was tough... The only thing that helped me was to lay very still and take shallow breaths. The less motion, the better.