I tested positive 4 days ago with Covid-19. My initial symptoms were lethargy and persistent headache. However, on day 3, I experienced a bit of nausea and chills and when taking my temperature, it was 95.3. It dipped to 95.1 after about an hour and I added extra clothing and blankets to stay warm. (I live in Houston so I'm not in a cold environment). This morning after drinking coffee, it had risen to 96.2. I've never run a fever with this and it seems I'm having the opposite problem. Has this been seen before and should I be concerned? I should mention I have been diagnosed with Hashimoto's disease and I currently take thyroid medication as well as LDN.