Tmi.. I need help!

So my boyfriend and i (im 23 hes 22) have been experimenting sexually.. Well last night i let him play with my ass with a vibrator.. (Not the first time in general but the first time with anything larger than a finger or two..) I AM COMPLETELY REGRETTING IT! It hurts so bad and i have been in and out of the bathroom all day.. Is this normal? I dont wanna freak out.. But it hurts really bad lol.. Only posting here cause i cant bring this up to any family members. And i need advice on atleast how to ease the pain