Try stimulating yourself durring intercorse! Lots of ppl say it works awesome!
A large percentage of women will never reach orgasm with intercourse. Or if they do, only very rarely. Oral sex is probably the way to go for you. If you can have an orgasm through clitoral stimulation then that's what you need to reach your orgasm. It will probably not happen during intercourse and you've already learned what you need to do to reach it.
One thing is for certain, if you and your boyfriend make it a "mission" and he tries too hard and you put a lot of pressure on yourselves.... its going to make it that much more difficult.
Stick to what works. You're still young though so your body may change.
Yes, maybe you should just try to stop and see what happens. good luck hun.