There's nothing wrong with doing your own research - as long as it's from credible sources. Unfortunately, there's a LOT of bad health information out there. One recent study suggested as much as 40% of health information online is from poor sources and is inaccurate.
Unfortunately, there are a lot of viruses out there that have really knocked kids down this year. Our kids are 4 and 2, both in day care full time, and they're always having something or another.
Overuse of antibiotics the past 20 years has really increased issues with ineffective antibiotics. So, when a virus is suspected, pediatricians do the right thing by not prescribing an antibiotic. There are a few antivirals on the market (Tamiflu being the most notable), but you have to use them within the first 48 hours of infection, and they're only FDA approved for certain flu virus strains.
Chances are, your kids are either just getting over the hump, or they're getting reinfested with a strong viral strain. It's so hard to watch them go through it and to be helpless.
Not sure if this will help, but I'm a HUGE fan of HealthyChildren.org, the American Academy of Pediatrics' parenting website: