From Sex to Pregnancy

Why some cycles result in pregnancy and others do not

Why some cycles result in pregnancy and others do not

The fertile window is short, and timing is unforgiving For natural conception, timing is one of the biggest reasons some cycles result in pregnancy and others do not. The egg is viable for a limited time after ovulation, and sperm survival is also finite. That means intercourse has to overlap the fertile window closely enough […]

How fertilization and implantation work

How fertilization and implantation work

Fertilization starts in the fallopian tube After ejaculation, sperm travel through the cervix and uterus toward the fallopian tube, where an ovulated oocyte may be waiting. This journey is selective: many sperm never reach the tube, and those that do must first undergo capacitation, a functional maturation process in the female reproductive tract that prepares […]

Timeline from intercourse to pregnancy

Timeline from intercourse to pregnancy

From intercourse to fertilization: the first biological steps After intercourse, sperm may enter the cervix and uterus and continue toward the fallopian tube, where fertilization usually occurs. If ovulation has already happened or is about to happen, one sperm may meet the egg and create a zygote. If there is no egg available, fertilization cannot […]

How conception happens step by step

How conception happens step by step

1. The cycle begins: the body prepares for a possible pregnancy The first day of a menstrual period is counted as day one of the . During the early part of the cycle, the brain and ovaries communicate through hormones, especially follicle-stimulating hormone, or FSH, and luteinizing hormone, or LH. FSH helps ovarian follicles grow. […]