Thanks folks!!
I don't think so luvfla, I don't use air freshener or anything like that in the bedroom. She sleeps on the bed with us (I know I know) so the only thing I suppose might be the detergent we use?? Although the Vet said he could feel that her tonsils were "up"..... whatever that means??...... so I've kinda ruled out that it might be an allergy because the vet seemed to know straight away what the problem was. I really trust our vet, have been using him for over 20 years and he's just the best - I've heard so many bad stories about some vets and I suppose I'm very lucky. Our guy is a real animal lover (as opposed to being in it just for the money). He has always had a lot of time for our dogs over the years. When you go to see him he has a genuine interest in the animal and will spend a few minutes petting them etc before doing anything. He's really gentle aswell, gives injections as if he were giving them to a little baby so as not to make the pup yelp. He's just the absolute best.
He did say that it would take a long time for Teeko to get rid of the cough, especially as she is so young. We were due to take her for her first walk this weekend but now we can't

, gotta keep her nice and cosy until she shifts this thing.
I might try letting her in the bathroom with the shower running as Patti suggested (Thanks Patti!) - I'll try anything to help ease it for her. It's very hard seeing such a little one struggling