Minor Setback?

I took this past Monday off, then travelled to Syracuse on business with the best of intentions to workout. Took a 3 mile jog Tuesday evening, then after eating a big meal that night I awoke in the middle of the night to food poisoning or a stomach bug and writhed in my hotel room for a day. Wednesday and Thursday were a waste. Friday, I felt a bit unsure but wanted to test it out.
Went out for a short jog, and felt fine so I then managed to get in the familiar 5K out my front door, and at 80% effort logged my own personal best...I hope I'm back 100% tomorrow for a 18-20 miler with the group.