Pregnancy can occur when a male and female engage in sexual intercourse. One sperm from the male (out of +/- 180 million released) fertilizes one egg from the female (out of +/- 300,000 available at the start of puberty).
A female can only become pregnant between 2-5 days out of the month, if intercourse happens the day of and (possibly) the day after ovulation, or if any sperm are present in the Fallopian tubes from intercourse during the three days prior to sexual intercourse.
At the day of conception, when the sperm fertilizes the egg, the DNA from the sperm and egg combine to form an entirely unique, one-of-a-kind organism. Over the next 9 months, the new life will develop from a zygote, to an embryo, to a fetus until it is ready to be born into the world.
HOW A BABY DEVELOPS IN THE WOMB
(Based on gestational age from last menstrual period)
- 5 Weeks Heart Beats
- 8 Weeks Fingers Present
- 11 Weeks Every Organ Present
- 14 Weeks Sucks Thumb
- 20 Weeks Sensitive to Touch & Pain
- 24 Weeks Could Live Outside the Womb
- 39 Weeks Completely Developed and Ready to be Born