This is potentially extremely dangerous. You urgently need to have a barium swallow test done to find out exactly what is going on inside your throat. What to do about it will be based on those results.

If you are unable to manage even your saliva, it is an emergency, and you need to go to ER. The risk of aspirating is extremely high.

If you do not address this issue, you are at risk of not only choking/becoming hypoxic/possibly dying in a emergency situation, but also of getting aspiration pneumonia, which can be serious and require hospitalization.

As for what to do right now...stop drinking thin liquids! Stick to drinks with thicker consistencies, like smoothies or other thickened drinks. You can purchase thickeners that can be stirred into drinks to thicken them. Be sure and get enough fluids each day, which can be difficult. Try eating thick soups and such to help.

I can't stress how important being seen about this is! Please get help.