95-97 spo2 when lie down half incline.

Hi doctors, I am covid recovered patient and complete 2 month after negative results. My 3 week back ct scan showed improvement. But because of all this two months, I started measuring my sp02 many times in a day. I lie down on back and check then it comes 95-97 , when I seat in incline position..then it comes 95-97 but when I sit on chair and do then it comes 97-98. I keep my finger in oximeter for minimum 5 min. During this reading varies which I have mentioned above I am really scared if behaviour if sp02 is fine which reduce when lie down or incline I dnt want to die so soon... I dnt have any symtoms. I get mild increase in temp( max 99) sometime when do physical work . Request to please suggest...