Last sunday I had a hangover and threw up (since then I have given up the alcohol and addressed my problem with that). During the vomiting, I was leaning against a building (not sure if that's relevant, but friends have commented that an odd posture might be the cause of the issue). Since then, I've been experiencing discomfort any time I breath deeply/yawn/anything that would expand the chest and lungs. Pain is sharpest in the middle of the ribcage area (Sternum). My throat will also get tight. Not the width of the throat (I can always swallow fine, its more like the muscles/arteries in my throat get tight). It's been going on for 4-5 days now, with no sign of relief. I can live my normal life, it's not holding me back from going to work, but it is concerning. Unfortunately I won't have health insurance for the next month or so. Anything you can recommend for me to do as a home remedy would be greatly appreciated. Thank you for your time.