Post covid/ covid. I check his spo2.

He is asthmatic, and having anxiety issue... around 11 april 2 of my damly member tested covid postive and he started showing symptoms on 14 april like headache, vomiting, loose motion with weakness... i consulted with his doctor and he asked me to perform covid test and prescribe me medicine on 16 th april..ivermectin 12 mg 5 days OD ZINK 50 MH OD VITAMIN C 500MG bd vitamin d 60000 one a weak i completed the course. and combination of chewable vitamic c, zink  vitamin D still going on... he was okay but from last 3 days he got weakness and today he got fever ( 98.9 at 1pm, 99.4 at 3 am i gave him paracetamol and then 99.9 at 10pm 100.3 at 1 am... i gave him another dose of paracetamol ) he has headache, body pain, mild fatigue, JUKAM one more strange thing hapoening from last 8dds... when i check his spo2... in sitting position o2 goes to 98 to 99 and oulse goest to 90 to 105... but same time as i make him stand... oulse started from 242 and goes stable on 120 to 140...