Here's what you should do:
1. Stay calm and observe: Notice any other symptoms like lethargy, drooling, abdominal pain, or changes in their gums.
2. Call your veterinarian immediately: They will be able to advise you on the best course of action based on your dog's symptoms and history.
3. Prepare to take your dog to the vet: Make sure you have your dog's leash, carrier (if applicable), and any relevant medical records.
Possible reasons for your dog's symptoms:
* Foreign object ingestion: If your dog swallowed something they shouldn't have, it could be causing obstruction and distress.
* Poisoning: Exposure to toxins can lead to vomiting and breathing difficulties.
* Gastrointestinal upset: An upset stomach can cause vomiting, but if breathing is labored, it could be a sign of a more serious problem.
* Heart or lung problems: These can also cause breathing difficulties and, in some cases, vomiting.
Important Note: It's essential to seek professional veterinary care promptly. Delaying treatment could worsen the situation and put your dog's health at risk.