It is called the "foamies" and it happened to me often the first several months after surgery. I still get them from time to time if I eat to fast, or too much or just because. I am just over 6 months post op.

One of my cues to let me know that I'm full is that my nose starts to run. That's when I know to stop eating or else I'm going to eat too much and feel uncomfortable.

The foamies (mucous) happens when I don't chew well and eat too much.

Be sure to eat slowly, chew, chew, chew, and chew some more before you swallow, and if your nose starts to run stop eating.

Give it as try and see if that helps.
Shelley :o)

I was told by my surgeon(5 weeks out) to garge first thing in the morning and then drink something hot(I drink tea) before I do anything else. I have bad allergies and always wake up with mucus in my throat. So far I have not had any issues with the mucus, so this method may be helping.

Yep! The foamies!! For the first year or two, when I ate, I checked my saliva....at the first sign of it thickening, I stopped eating!! (later, I discovered I hiccup when I get "full."

JJ

Yep, I had to learn the hard way too. Right before the mucus starts, you should feel your soft cues kick in. Mine too is a slightly runny nose and a feeling of fullness, sometimes a slight hiccup. That tells me I'm within range of one bite too many.
Slow down, enjoy your food, and pay attention to your body. It will tell you when to stop as soon as you give it time.
Another mistake I did with similar results was eating just the right amount of food, but not waiting at least 1/2 an hour afterwards to take a drink of water. Gave me the same issue, backs up on top of the food, triggers nausea, and then a run to the porcelain bowl. Yuck.

When I eat too much or too fast this is what happens:

Nose runs
Sneezing

Then I have to go to the sink and spit up mucus. Then I'm fine. Doesn't last long and no pain in involved.

My clue to being full, or in most cases too full is a runny nose.

I have had the foamies too when something makes me sick, completely different thing.

I'm three years out and have never had the mucus, but always get a super runny nose when I'm full...still! It's like a 'pre-dumping' warning and I appreciate it, because it keeps me in check! Usually subsides in 20-30 minutes. 100 lbs down, and maintaining :) Hang in there :)
Jody

Once I get the foamies there is no turning back. I am going to vomit. It usually happens when I eat something that doesn't agree with me. The most recent was corn on the cob. Big mistake. I also hiccup when I'm full.