This is probably your problem then. Saliva helps the swallowing process, not enough of it means problems with swallowing. Try squeezing a lemon in your mouth (just a few drops) or chew a chewing gum, as far as I know, this stimulates your salivary glands to produce more saliva. Then try swallowing something and see if it helped. If it did, you found your problem. Visit an ENT too (of course).