My dd (8 months) has had a string of colds over the last month, the last of which is on the way out. However as the snot has dissipated, she has developed a really tickly (I imagine - it sounds it ) cough, which is particularly bad at night. It doesn't seem to be bothering her, she is lively and doesn't have a temperature (though is a little clammy, but it is fairly muggy today, isn't it). No wheezing. But waking a lot in the night and it's horrible to hear her coughing away in her sleep. Any suggestions? Is there a point where I should take her to the doctor? Do cough medicines work?