So I did it.
I got sick on Wednesday, and Thursday and Friday I was in bed, but I was determined to do the run today. I did it, but my time was not very good. I was hoping that I would get under 53 minutes. I got 54 min, 25 sec (10'53" pace per km) but I've done 53 minutes in so many practices I thought I could do better on the 5K because I would be pushing harder. I'm really sure it has a lot to do with the fact that I'm sick.
On the positive side, the fact that this is a private 5K because I couldn't walk the long distance to the city's 5K means that no one is going to get sick because I ran.