My 9 Month Old Is Throwing up Every Morning

It sounds like it might be a hiatal hernia--this is when the stomach gets caught up under the diaphragm. It happens in babies because their stomach muscles aren't strong enough to keep all their organs in place. It happens in adults due to stress. It is a simple chiropractic adjustment to fix the problem. I would try that first. If the problems continue then you may need an ultra-sound. I would't put him on antacids. They will effect his ability to properly digest protein, which makes it hard to grow. There are natural remedies that work for GERD that won't have side effects and are safe for baby. Wish Garden makes herbs for kids in liquid form that are safe and effective. The herbs that help with this are typically catnip, fennel, aloe vera, papaya, probiotics, slippery elm, marshmallow. We had to use both these solutions for my youngest and it worked great.
Hope that helps! If you have more questions about this I'm happy to answer them.
J.

Infants usually outgrow this if it is infant GERD (or acid reflux). As for the constant coughing, recurring pneumonia can be a symptom:
http://children.webmd.com/infants-children

Some things you can do to help:
http://children.webmd.com/infants-children?page=2

Also, since it primarily happens in the morning as what i'm guessing is an aftermath of night feeding, try and elevating the mattress so the baby's head is higher than his feet.

Trying soy formula could help if it's colic from a dairy allergy.

In any case, it isn't normal and if your pediatrician doesn't address it, then get a second opinion.

The adult version of GERD is massive heartburn and acid reflux, caused by frequent acid reflux — the backup of stomach acid or bile into the esophagus, which can erode the espophogus, which if that happens, it could lead to esophagal cancer, but there are surgeries and meds that can help prevent this.

Just be sure you are researching GERD (or colic) for infants, as the adult version is a little differant and more serious. Much more info here and read all 9 pages, including risk factors for this:
http://www.mayoclinic.com/health/gerd/DS00967

...I might suggest getting a second opinion from another pediatrician. My second daughter last year had a cough that lasted 2 months, no other symptoms. I took her to the ped at least 2 times because I was concerned about it turning into pneumonia. The ped kept checking her lungs and said they were clear...but the cough sounded wet and runny, how could they be clear? The cough eventually went away on its own but at the time I was concerned that the ped was not really taking my concerns seriously. When you feel something is wrong but your doc is saying there isn't, maybe it's time to seek a second opinion just to calm your concerns.

I think you need to address it with the pediatrician before you start switching formulas, etc.
Is he eating right before he throws up?

I would take him back to the dr and bring up the throwing up episodes. This isnt normal and no one on here can tell you for sure what it is or isnt. A Pediatric Gastrointerologist sounds like your next stop.