There is not really much of a necessary connection between pregnancy and whether or not the woman has an orgasm during intercourse. Conception is a complex physiological process that requires a healthy and vibrant sperm from a male and an egg from a female to successfully unite to become a fertilized egg and to successfully implant in the uterus before conception can be completed. Orgasm neither promotes female ovulation nor egg fertilization, nor does it accelerate the fertilization of the egg, so there is not much of a necessary connection between orgasm and conception rates. However, since orgasm can make the vagina fully moist during sex, it can facilitate the movement of sperm, and the contraction of the vagina after orgasm can also help the movement of sperm, which may increase the chance of fertilization. However, there is still no full theoretical basis for relying on orgasm alone to determine whether or not conception rates have increased.