If the fever and general feeling of complete exhaustion is gone tomorrow, I'll do an easy 45 minutes or so on the trainer. Hopefully I'll feel ok after that, so that I can follow up with another 60 minutes of easy riding on Thursday and 90 minutes at moderate intensity on Friday. But, the most important thing now will be to take one day at a time and listen to my body.
It's always frustrating to get sick, since it disrupts training. This is not, however, the worst time to get an RI. The important races of the season are still 6-7 months away and although this will set me back 3-6 days, it's still no crisis. Yet... :)