Hi there Hoose and everyone
I'd echo what others have said about really listening to your body and not getting back into it before you feel ready.
Earlier in the summer I had a nasty virus - not swine flu, but one of those things that gives you vertigo and makes you feel dizzy, nauseous, feverish and lightheaded for a few days coupled with some bad cold symptoms
I was in the middle of working on a masters dissertation and really, really busy, but thought I'd get straight back into exercising after a few days off - didn't feel great but was trying to lose weight and also thought running, and other exercise, might be a welcome break from the studying.
But I have to say, I was more forcing myself into it than actually being properly motivated, so I probably should have waited a little longer.
About a month later I ended up completely exhausted and fatigued, to the point of having blood tests for anaemia, thyroid function and diabetes. When all the results came back fine, my GP and I came to the conclusion that I'd never allowed myself to get properly over the virus, whilst also being in the midst of a big load of stress.
I'm fine now, but still not quite back up to speed with my running (knees also causing difficulties, but that's another matter...)
Take it easy, Hoose, rest up, and if you feel motivated to get out there running again, take it very, very steady.
These days I'm taking zinc and echinacea, but actually I've also considerably upped my fruit and veg intake and that also seems to have helped.
Good luck with it. 
Edited: 17/11/2009 at 12:00