Whoa, excuse you. Take a step off your high horse and calm down.
You asked for possibilities. I gave them to you. A ribby horse with a pot belly. Those are the first TWO OBVIOUS things that come to mind.
I was not rude at all in my original post. Stated facts. Sorry if you don't like the suggestions I put on the table, but oh well.
Find another vet, and get a second opinion.
Like said before, this is not caused from pregnancy, if she is pregnant, the fetus is wayyyy too small right now to make a mare show. There is an underlying cause to the pot-pelly. Its not the possible foal.
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