I feel like my symptoms are had to explain, but here goes. I feel like someone is sitting on my chest and I have to breath harder or more often. It gets worse at night and seems better when I lay on my side instead of my back. It's starting to keep me up. I've tried an inhaler it doesn't seem to be working. I am a 27 year old female. If any one has any ideas as to what it could be please let me know. I have thought mabe acid reflux. If any one knows more about acid reflux please let me know.