Okay so my bf and I were at it last night and he started fingering me and I was perfectly wet. He usually uses one cause I dont like that super tight uncomfortable feeling (still new to this, probably fingered a few times) and he tried two fingers and it was okay, just really tight initially but soon after while he was getting a little rougher, I feel this burning sensation and it made me wanna stop. Even when he only used one finger, I still had this feeling. What could it be??