K.T.
Honstely my daughter did the exact same thing and I couldn't take it so I took the pacifier away from her and she found her thumb and I was a happier...less psychotic mother. This being said the thumb is definitely harder to take away and though she is now 5...I rare ever see it in her mouth anymore and it would only be at night.
With my son...he did the same thing and this time I decided to let him have the pacifier and I felt psychotic for 9 months...he is now 1 yr. old and I plan on taking the pacifier away this weekend. We'll see how that goes...he still throws that thing out of the crib knowing I'll come back, give it to him and lay him back down. It drives me nuts but it's about to end. It helps to have it attached to their clothing too by the way. He can find it himself and as long as he can't get it off his shirt...he can't throw it out the crib!
I wish you the best of luck...I know how it feels and I cannot handle constantly being woken up because of that...that...THING! :o)