I also caught it last month (for the first time, I believe). Sore throat one afternoon, took a test, negative, then was just exhausted the next day. Continued to feel tired with a runny nose for the next two days (missed 3 days of running) but felt fine the next day. I was back at work and frankly running very well, so I assumed it was just a cold I’d kicked. Then my partner tested positive and I tested positive (this was 6 days after initial symptoms). Still felt really good and was running great with HR in normal range. I never got worse so we’re guessing that my first test was a false negative.
The phlegm and a minor cough lingered for another week or so.