Sheila,
I make a lot of saliva too. I constantly have to purposely swallow often. If I bend over it may dribble out my mouth. I carry a tissue for those moments.

At night when I lay down to sleep I choke on the constant saliva I make. Sometimes in my sleep I forget to swallow and end up gasping for breath and choking on my own saliva.

You are not alone with this one. Many people have this. I guess it is better than too little saliva, but in the middle would be nice.

My eyes are too watery too. In the morning when I wake it runs down like I am crying.

I figure I don't sweat, so the fluid has to escape in any way it can. That's my idea any way.

What is causing it, I don't know. MS or other.