Hello doctor When I stand in a place for too long (sometimes 5 minutes sometimes 2 minutes) i start feeling dizzy and weak and I need to sit down immediately. I also start breaking into a cold sweat. In the first 2 days i also had a little fever but that's gone now. This has been happening for the last 4 days. I've taken a covid test and the result was negative. Symptoms: Weakness Dizziness Cold sweat Slight fever