Tricia I'm sure Uny is going to pop in here unless she has already advised you about getting off of the Effexor and I missed it. How long have you been on it?
You don't want to come off too fast, withdrawing too quickly can cause awful side effects so this might be what you're experiencing right now.
Now that you've figured out what's going on you'll learn how to deal with it, yay! Hang in there, you're gonna get through this!