I was told yesturday that my 7yr old has RSV and it got bad in one day.. I'm worried because, my 3yr old has RAD and is now showing symptoms of the same thing. Her Dr is closed. Im giving her treatments every 4 hours should I start doing it every 3 like her sister? She trys to blow her nose and tells me crying it won't come out, it'll run a little, but it seems to be doing the same as her sister.. Is 99.5 under her pit something I should be worried about?