Welcome to JustAnswer! I am a licensed veterinarian and would be glad to help!
Based on age, breed, and signs reported, especially in this breed - causes to consider would include: Allergic airway disease Heart enlargement Tracheal collapse Infectious causes of acute bronchitis
With that said, if the signs persist or worsen, I would recommend a check-up with your veterinarian.They may recommend x-rays to make sure there is no evidence of pneumonia and also to listen to the heart and look at the heart on the x-rays with the lungs.If there is a concern for infection, antibiotics will likely be prescribed.For congestion, many owners find humidification helpful. This is achieved with a children's / baby's humidifier for 10-15 minutes twice daily, or using the steam from a hot shower - this will allow humidification and help to moisten the airways for mucous breakdown and to improve congestion.Cough medications can be considered as well - an example is Dextromethorphan (link here). Often before using cough medications, x-rays are used to make sure that there is not a primary or secondary pneumonia as cough medications slow down the treatment of pneumonia.
Which disease would cause throwing up. This concerns me the most. It has been happening often. Also his coughing, Hacking, is worse when he is stressed
They can cough so much they vomit or retch as a result.
With any of the above.
ok thank you. How long should I wait until I take him to my local vet?
Ideally if the signs continue - I would see your vet as soon as you can get an appointment.
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Thank you! Kate~
You are very welcome!