Not sur eif this is the right place to post- sorry mods if its not

Sophie has always has issues with milk comng out her nose due to reflux and problems breathing -from I thought the milk. But the last week she has been waking up hysterical cause she cant breathe and nose seems to be blocked. I have tried a burner with just water, then water and some tea tree oil, I have used vicks baby rub, having her in the shower with me before bed, putting a drop of warm water in her nose then suction, nothing seems to be working. Sometimes it comes right of its own accord, sometimes she sneazes and it comes right, other times she just sobs back to sleep. She doesnt have a cold but the night temps are low teens st the mo and with colder weather on the way Im starting to get worried.
Anybody been through this? any ideas?

Its really scarey when they cant get a breathe