sneezing and congestion after eating?

does anyone get this and do you think I should be concerned?
I noticed a little over a year ago that immediately after I ate I would have congestion in my lungs and have to cough. I ignored it, because it didn't seem like a big deal. Its gotten more frequent enough that people around me are noticing the correlation ( i actually hadn't put it together) I also will go into sneezing fits of 6 to 10 or more sneezes almost every time with in a half hour after eating. It sounds silly I know, but its embarrassing and painful because my hernia is acting up so coughing and sneezing are extremely unpleasant right now to put it mildly. My mother thinks its a sign I have food allergies but I was tested a few years ago and the only allergy I had was clams, which I have eaten with out problems. I thought maybe it was milk products but it happens even with meals that I eliminate dairy from.

When you eat, the digestive tract prepares itself for the incoming food by increasing saliva production in the mouth and mucus production the rest of the way.

In many people, this spills over into the nose, throat, and sometimes even the lungs as well. I know people who get a runny nose every time they eat. I know people who sneeze some when they eat. Me, I get a runny nose every time I have a bowel movement.