For the past three weeks my partner and I have been showing very similar symptoms including full-body aches, nausea, and chills. However, these symptoms tend to flare up for both us on the same days and - in one case - down to almost the same time.
Day 1: Three weeks ago my partner (who I live with) woke up with chills, full-body aching, and was having a hard time breathing - the latter of which lasted about 3 hours before improving. Concerned this was COVID and since she has a slightly compromised immune system, we went to the ER. She was ultimately cleared to go home and her tests came back negative. That same morning, I also woke up feeling terrible. I had full body aches and chills, as well as nausea, but had no breathing issues. Assuming it was something I ate and just coincidental timing with my partner's symptoms, I did not get tested for COVID. My partner had been showing some lighter symptoms w/out breathing issues a few days prior. I had shown no prior symptoms. Both my partner and I felt ill from around 6am until 2/3pm. The transition from feeling ill to feeling better was really quick. My partner went back to just mild symptoms and I was nearly 100% better. (We quarantined for 14 days out of an abundance of caution.)
Day 2: Six days after day 1, we woke up with the exact same symptoms we had individually experienced on day 1: partner had trouble breathing, I had nausea, and we both had full body aches and chills. These symptoms lasted maybe 5-6 hours this time. Again, once they were over, they were over. We were back to feeling normal by that evening.
Day 3: Just yesterday (just over 3 weeks since day 1 and about 2.5 weeks since day 2) we both started feeling ill again after a couple weeks of feeling fine. This time, our symptoms started at around 6:30pm and they lasted about 3 hours. The freaky part was that our symptoms flared up almost down to the minute and came on like a light switch. Within 20 minutes or so we both went from feeling fine to feeling chills, aches, nausea, and partner had tightness of chest again.
We are both mid-twenties, generally healthy, get consistent exercise, etc. Outside of partner's immune system (IgA deficiency) we have no other underlying conditions. Between our symptom flare ups, we have felt generally well. Is this COVID and the test just came back false negative, or something else? And why we are experiencing symptoms at nearly the same times?