Chest & Breathing Problems

My present SPO2 is around 92 and 93. Little breathless. I have a 7 ltrs oxygen concentrator at home. Please advise me if I can start using the concentrator and how long should I use it with how much litres.

Spo2 levels turned to after covid 19 recovery , above 95% , but sometimes  rearly during sleeping sop2 drops below 90% even to 83% but slight change in posture saturation instantly becomes normal , possible reasons ? And any advice?

I got affected with COVID 1 month ago. After 1 month my Oxygen saturation is 98. Why am feeling shortness of breath still?

Recovered covid 19 patients during activity shows normal spo2 levels Above 95% but sometimes during sleep it drops below 90 - 85% but comes back to normal with slight posture change , what could be possible reasons and how to overcome , please help

I had corona positive on 6th may... Today is 14 days quarantine completed... I have no major symptoms but i have bad smell in nose and weakness. Can i get corona negative now?

Does TB medicine cause Joint pain? I have been taking TB medicine for my neck lymphnodes since last 10 months 15 days and still continuing. I think, My lymphnodes gone completely now. I am having pains in my joints like ankles, elbow, wrist and fingers. Does this go away after stopping medication? I am thinking to stop the tb medicine but i am so afraid to stop them. The reason i am taking tb medicine more than 9 months is bacause they have gone completely and came back at the end of the six months while i am on medication. I also lost some vision and was told that ethambutol caused this issue. So i am taking Rifampicin and isonized since last 3 months. Any advice please?

For the past couple of days, I feel uneasiness in chest while try to sleep in the night. I don't have this issue other times of the day. When this happens, I get up and drink water and lot of belching happens. After sometime, I feel relaxed and sleep normally. I monitor my SpO2 at home and when I visited a general physician yesterday (May 18) and it is at 97/98 all the times. I don't have any other symptoms of Covid. However, the doctor has given antibiotics to be on the safer side along with vitamin tablets for 3 days. Is there anything else, I need to check? Is CT scan of lungs required for my condition?

I was tested COVID-19 positive on 16 April and again tested positive on 27 April. I don't have any symptoms other than  cough and irritation in nose that causes sneezing. Please recommend the medicines

I was experiencing a little discomfort breathing therefore got my HTCT done The score is: CORADS -5 CT severity score - 4/25 What does it mean ?

I got covid positive on 5 th May, 2021. After recovery and 14 days, I did a repeat test on 18.05.2021. My CT value is now 25. Is there anything to worry or is it normal?