So basically on Monday 7th I felt quite nauseous with no fever or headache with a low appetite but during the day I had extreme chills, near about 11am-1pm this has been continuing to this current day and I still have a lack of energy/Nausea (Saturday 12th) although now I have a bad/severe cough which makes me have short breaths and affects my voice- it also feels very Phlegmy, I'm worried this could be pneumonia and I'm freaking out
Help Please.