Choking 17 year old iguana AFTER EATING

Ok I could use some input on this one from some professionals. What do you think this could be that is causing my 17 year old female Iguana to do this type of choking ONLY after eating. It seems as if she either cannot breathe or cannot swallow after she eats. This has been going on almost every day for a week and occasionaly a few times to several times a year for the last 5 years or so. Please help as it has become DAILY. I will take her to the vet in the morning but could use some honest input on this one. I love her very much. She is fine right now but every time she eats she does this and HHHHHHHH like she is going to throw up??? I dont know. Her tounge and throat look fine to me inside. Sometimes when she chokes or does this there is food in the back of her throat.

PLEASE WATCH THE YOU TUBE VIDEO BELOW...and give my your opinions. Thanks so much

http://www.youtube.com/watch?v=wPoUYsZkYcw

Here is another video to look at for me.
No replys YET? Why?

http://www.youtube.com/watch?v=Vr_fSubDdow

Ok the meds given to her today were Fortaz for some sort of throat or mouth infection and Metronidazole for small bacteria in her stool. Hopefully she gets better soon. If anybody knows anthing about this stuff please fell free to let me know what to expect or what else to expect.