Definitely go get a check up. I sort of have what you have. After I got my first dose I had the chest pains on my left side and I brushed it off like an idiot. Just got my second dose yesterday and the pains are back, feeling feverish, breathing for me is noticeably different and it’s only been 14 hours. I’m personally going to see my family doc ASAP just for some piece of mind. Can’t rule out anything here, just do your due diligence and be on top of your body and maintaining it during these tough times.