2 weeks ago I came down with a cold presumably caught from my son. I developed a cough so on Monday of last week I got a test which was negative. By Thursday this week I felt better and wasn't coughing much at all.
On Friday I started coughing more again and today I have started sneezing and nose running again. Should I assume this is the same cold virus that I've had for 2 weeks, as I never got completely better, and the symptoms have just got worse again? Or should I assume this is a new virus and needs a new test??