Problematic Wet Dream Behaviour

Okay, so i have been having a wet dream almost every week. And i want this to stop, the first one i got was a crazy feeling, but now i dont want them anymore, they arent fun anymore. I didnt drink water before i slept and i meditated for 4 minutes. But my thougts were a little impure… very little! I have also tried sleeping on the floor but i had crazy pain when i woke up. I need help!