Welcome to Healing Well Wrapped Club! When food gets stuck and you "vomit" it's really more like coughing up a "hairball" the way a cat does. You don't have to worry about the times you've done that. Still, I'm concerned with the lack of information and support provided by your surgeon.
When he says "eat whatever you can swallow", does he give you any guidance as to how to choose the foods you eat? Here is a rule of thumb that should work for you. Take small bites and chew, chew, chew until whatever it is you're eating is a liquid, creamy consistency. Don't eat anything that doesn't chew to a liquid. If you find whatever it is will not chew completely, spit it into a handy paper napkin and don't swallow it. Here are a few resources to help you choose the right kinds of foods to eat:
If you are having difficulty swallowing chunky foods (and you will always have more difficulty with this, as you've had an unnatural barrier placed between the esophagus and the stomach) the be sure to stick strictly to foods on the soft diet list. Actually I found crispy things (like saltines) chew to a liquid easily. After you're fully recovered it's not as big an issue, but you'll always have to eat more slowly and chew your food completely.
Stay away from iced drinks, carbonation, and straws.
It is totally normal to need to chew your foods to a liquid at your stage of recovery. It takes time for swelling to completely resolve, and healing takes a full 6 months for most of the healing and a year for the rest.
Your stomach has been through a lot, and nausea is its way to say, "Slow down!" Listen to it, and treat it gently for a while. Stay away from irritants like spices, acidic foods, and alcohol until things are feeling better for a while.
I'm glad to hear you have anti-nausea drugs. Be sure to take them with you wherever you go. As I've said, it is very dangerous to your wrap to vomit or retch repeatedly. Protect it with anti-nausea drugs. The Compazine suppositories work great with a real stomach bug. It's worth having around, just in case. It comes in a generic form, so it's affordable.
If you get feeling full very quickly, then it is good advice to eat until you're full. If your body allows you to overeat, then you need to control your meal quantities yourself. I'm sure it's hard on your stomach to be overly full, and it puts more pressure on your healing wrap.
Glad you've joined the forum.