[anonymous]

You have not provided much information on your dog. Age? Prior history?

Vomiting is not normal, especially if it is not acute.
You imply in your post that it has been going on for a while.
So I would consider it chronic.

Have you tried a dome bowl designed to slow down the eating, in case the dog is eating too fast?
Are you feeding small meals 3 or 4 times a day instead of 2 large ones?
Don’t free feed, leave food out all day. I would add a little water to dry kibble.
These are things I would try.
I would return to the clinic and ask for a diagnosis. If that involves doing some tests such as lab work or x-rays, so be it.

It could be nothing, but it could be something that will respond to treatment.

No one can diagnose your pet over the internet nor should they try. Please do not give over the counter meds and supplements unless advised to do so by a veterinarian that has examined the dog.
What worked for someone else’s dog might cause harm to yours.