Really, really sorry to hear that. That's gotta be one of the most frustrating things about cycling or any kind of fitness activity you really grow to enjoy... you're doing well, feeling great, and then whammo, you get hurt or sick and have to stop for awhile.
Only bit of advice I'll give is that you not do what I always seem to do... get back on the bike before you're well and truly over it. I tend to get back on the minute I'm feeling decent again, make whatever was wrong flare up again, and in the long run spend more time off the bike than I would if I'd just been sensible about it. Take the time to get well.