my hand is stuck in a pussy

i was having some fun time with my girlfriend. she asked me to fist her which i thought was weird. why would u want to put a whole fist up there y'know? but whatever and i listened. i put lube on my fist and stuffed it up there. after we finished our sexy time, i went to remove it, but it WOULDN'T MOVE OMG. turns out the tentacles in my girlfriend vagina is holding my hand still. it's been 2 days and i had to sleep on her coochie. how do i remove it. plz help