When MIL was tested positive with Covid it's been up and down. One day high temp, very low bp, and not eating and oxygen levels low. Next we hear she's doing better, sitting up in bed swearing and wanting 5 rounds of toast, and temp, bp, oxygen much better. Then it went back to looking bleak, breathing laboured, difficulty swallowing and high temp again. Today, she's taking fluids and smiling.
The uncertainty is horrible. Every time the phone goes you get that awful feeling.