Day 7 after testing positive

I had what I call a phlegm attack last evening and it was a mess trying to cough it out and today I'm scared of eating a real meal because swallowing food or hot drinks triggers my lungs. I can feel some phlegm but it's not exactly around my lungs which is a good thing, it's in the back of my throat. I had yoghurt for breakfast some hours ago. I'm just trying to take it slow and if nothing happens before going back into bed tonight I'll be fine.
Bpm and oxygen levels are normal.