Not Eating

For the last few weeks, I have noticed that Trevor has began to refuse certain foods. He acted like he was having difficulty swallowing them.  He would chew the food, and then spit it out, most of the time gagging as well.  If any food remained on his tongue, he would stick it out and cry until I wiped it off.  This is definitely not typical for Trevor.  He is a very good eater, and always has been.  The amount of foods he is refusing is increasing.  In the last 3 days, Trevor has not eaten much at all.  We have an appointment with a specialist in Houston on Friday.  I am praying that this is nothing serious.  For the time being, I am monitoring his weight to make sure that he does not lose too much.  He is also drinking PediaSure to help with calorie intake until he begins to eat normally again.  Trevor weighed 25lbs 2 oz about 2 weeks ago.  He weighs 24lbs now.