My DD has had a cold and is now coughing when she wakes. This invariably leads to her gagging and bringing up a watery/flem like liquid. The doctor has given her an inhaler and said she has a very strong gag reflex. She is now panicking about being sick in school and wants to cancel her birthday sleepover. Is there anything I can do to help her? This cough and vomiting happens a couple if times a year b