Dd2 has had a cough for about a week, the last two days it's gotten worse. Now she rattles and seems to be blocked up, but no visible snot.

I took her to the doctor yesterday and he said she has a virus, probably in her upper respiratory tract because her lungs are clear (phew). Throat and ears are also fine.

She has no fever, is still her happy self (I swear she is the most easy going placid thing!). Problem is when she is sleeping she starts to cough and choke a bit and gets herself upset. I have tried baby Vicks, eucalyptus on tissues and elevated her cradle a little. Is there anything else I can try for her?

To me it sounds like she needs to have a really strong cough to clear it but I assume her little muscles aren't quite strong enough yet?