USRD?

Today may be an unscheduled rest day.   Blah.  It's only two miles, but I came home from work early because of this nagging-kicked-in-the-stomach-by-a-horse feeling that popped up every 15 minutes or so.   I had a non-stop dull ache until this sharp shooting pain would start up.  I tried to tough it out, but what made me give in was the fact that if I had a stomach virus that has been going around, I did not want any of the little ones to get it.  So, I called it a day and a sub was called in on short notice.  I'm sitting here on the couch after some crackers, water, and a 2 hour nap feeling good.  I had a Clif bar a bit ago and it feels fine.  I'm not quite sure what the pain was, but it wasn't a virus.  It's 46 and sunny out right now and I just have a dull ache and feel really, really tired.  Do I head out when I took half a sick day for the 2 miles?  I don't feel perfect, but good enough to go...but then there's that guilt.  I might just do the 2 on Friday or skip it all together ("I might just do the 2 on Friday or skip it," said the Naked Gun fans).  It is a taper week after all.  I guess I'm convincing myself right now to listen to my body and make my taper 2 miles less (or more since it's a taper???).