my 5 wk old dd i think has caught her sisters cold ( we suspect slapped cheek) she is sleeping ok but has a terrible cough, very loose, and i suspect a sore throat. also constipated, moving bowels every 2 days and bright green (but soft) (sorry for graphic description). every time i feed her she brings half of it back up, usually with a big loose cough. i actually think she is only keeping down half of her milk. any advice? wish i could go to the chemist but theres nothing i can give her, is there?