if there is food and liquid in your stomach, it may protrude more than it would in a fasted state. this is normal. there is "stuff" in there.
do you "feel" bloated"? you may want to concentrate on chewing more thoroughly and cutting food into smaller bites.
what kinds of high carb meals are we talking about here? a loaf of bread o a giant pile of spinach?
i don't track my sodium, but do salt my foods and feel fine most of the time. however, when i have something really salty, like soy sauce, i definitely gain some water weight for a day or two.
i'd be a vegetarian if bacon grew on trees.