If you are seeing bloody dicharge from his nose have the vet swab and test for fungal diseases.
And just so you know kennel cough just can pass dog to dog - just easier to catch it in a kennel like its easier for a kid to catch a cold in kindergarten.
You can read about tonsillitis in dogs here
www.sniksnak.com/doghealth/tonsillitis.html
He may be off balance if the infection is impacting his inner ears too.
I think you need to call the vet and let him or her know your dog is getting worse not better and tell them the new symptoms.
Hope this helps you!
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