Working Out While Sick - What's Your take?

I am really itching to get into the pool today as I usually spend 2 days a week doing drylands only and yesterday was one of them (and I had planned turkey day to be the other since I need to do a bit of traveling). However, I have a really terrible sore throat and some congestion. So much so, that I stayed home from work so people wouldn't be yelling at me to go home all day, and it being a slow work week I knew I could get away with it. Although, I feel like I could get a small workout in, or at least try and see how it feels. I'm not sure wether to go with the theory that my body needs a break, or the theory that if you're not glued to the bed, you should go work out. I am at a critical time right now where after years of being out of swimming I am ALMOST built up to what I consider for myself to be respectable amounts of working out per week and making certain times in practice. Little setbacks like this end up being pretty big because I usually can only swim between 30 and 45 minutes 5 days a week. Considering the life of a 26 year old in her first few professional years also in a degree program with a new niece and nephew 2 hours away, being able to get that amount of time in the pool I think is a major accomplishment. Just not quite enough time to re-build that feel for the water very well or very quickly. I might compromise and just do some more (but light) drylands today instead. So, I am wondering what people do when they aren't sick enough to stay in bed all day but still sick. Are there any studies out there, or is it really just an individual gut feeling on what you should do? Thanks!