Birth control and lubrication

My boyfriend and I have sex all the time and getting "wet" has never been an issue. I started taking the pill about 2 and a half weeks ago and now, now matter how much I want to I can't get wet. It's happened twice now. We were both really horny and he threw me on the couch but he couldn't get it in because I was too dry. It's really started to make me upset and I want to quit my birth control. Does anyone else's birth control do this to them?!?! Help please!