Sounds similar to what happened to me, I had a dry cough come on around March 17 and initially thought it was allergies, but those aren't my normal symptoms (sneezing and itchy eyes). I had heard enough rumblings about asymptomatic cases that I decided to completely isolate until it went away just in case. The cough got moderately bad the following weekend and then slowly cleared up over the next week and a half. The only other thing that was any different than normal was that my appetite was roughly half of what it normally is but I chalked that more up to just being home all the time and not doing a whole lot.