Trouble swallowing everything?!

For the last couple of months now, I have been having trouble swallowing just about everything, from food and drinks to even saliva. I have some sinus problems, which causes an almost constant slight post nasal drip, and also seem to produce a loot of mucus. When I try to swallow the mucus, it feels like it gets stuck in the back of my throat and I need to swallow a few additional times to get it down. I have the same problem with food. I also noticed that I start coughing after attempting to swallow things. To even attempt to eat food I need to have a bottle of water on hand to help it down, and I need to "force" the food down sometimes. I noticed that it is easier for me to swallow things in the morning, right when I wake up and it gets progresively worse throughout the day. What could this be please help??