be honest and up front, otherwise she'll think that is how it's suppose to be. Always remember to be nice as possible and it'll be fine!

Did it feel like your penis was put in a blender?

you should have told her the truth that it was hurting. I doubt she'd get mad. just advise her to cover her teeth next time.

Communication is key dear... If you aren't willing to talk about it, you aren't mature enough to have it.

You have to tell her. She won't know it wasn't enjoyable for you if you don't communicate with her. Just be honest it'll help her get better at it and won't hurt you as much

That bites.

Not mature to talk openly about sex with a partner, not mature enough to have sex...

That sucks?

I've never given one (I'm a straight guy), but from what I understand, keeping your jaw open enough for long enough can get tiring and sore. If it's your first *******, maybe it's her first too, and she doesn't know how it's done. Let her know nicely, say something like "You know what would REALLY drive me wild?!? If you tried..." Oh, and return the favor. That should go without saying.

why didn't you just gently ask her to be gentler? it's OK to talk her through it. now she's gonna feel shit when she realised you just cringed all the way through it and didn't tell her