I watched a show on discovery (or one of those channels) not long ago that said that on orgasm did help. When you climax, your cervex kind of dips down into the sperm. Besides, an orgasm never hurt anything!!
An orgasm is just your womb contracting. When you think of what contractions do during labor and delivery that wouldn't make sense (as they push the baby OUT, not further in).
It really doesn't matter if you orgasm or not.
They say its good for a woman to orgasm after a man since it will help transport the sperm to the egg..idealy not before a man ejaculates since your uterus will push the sperm out.its not the given rule though,it dont really matter if you do or not...
i have heard it really doesnt matter but i also read on the O calander on webmd that if u wanna try for a girl to do it one way and a boy another way and some of that does say for the woman to orgasm first so i think it just depends on what ur going for but if it dont matter then i would say not necessary.