I know that covid has been here for ages but I've been lucky enough not to catch it until now. Tested positive yesterday and my lungs feel like they're burning when I breathe. Is this normal? My nose is blocked so can only breathe through my mouth which is so annoying. I can barely make a cup of tea without having to sit down, is this also normal? I'm triple vaxxed. I have other symptoms but these are the ones I'm worried about the most.