Hi,
I can very well understand what you are feeling and my heart goes out to you both.
Below is a link from a post I wrote not too long ago were I talk about something like this.
I was told once that this is what my Buffy had, then allergies...... I bought an air purifier, new Kerby vacuum (not cheep)....on and on. Oh something I forgot to say in that post....my vet gave some drops that you put in her nose for when she sounds stuffy, it opens up her sinuses fast and good. She would have these attacks during the night really bad.
Also I have notice she has more problems during the summer when the air is dry and especially when air is really bad from fire's.
The weight problem plays a Big part, Buffy can only eat R/D food from the vets office. It is 40% less fat, what you find in pet stores is only 8% (give or take) less fat.
Read my story and if it sounds like what your going thru I have more info. feel free to PM me.
Sorry I'm really sleep now.
http://www.yorkietalk.com/forums/sho...8&postcount=18
Hope your baby feels better soon.