Anyone else?

Ok so I’ve told my dr about this and she felt bad that she didnt have a answer for me told me if it gets worst go to the er so everyday if I’m sitting or laying out of no where I get short of breath and a bunch of pressure in my chest area I can’t tell if my hearts racing’s while this is happening it hasn’t gotten worse but it’s scares me sometimes cause it hasn’t gone away and I’ve had this for a few months now.

Has this happened to anyone and what is it?