You’re not even pregnant yet, but doctors have already started counting. Technically, your pregnancy starts on the first day of your last period, so the follicles in your ovaries are ripening. When you ovulate, the super-ripe ones rupture, and release an egg, or ovum, which will then travel down your fallopian tubes to meet a sperm. So right now, your eggs are basically primping in front of the mirror and doing Jägermeister shots, ready to hit the town! You never know which egg will get laid. It’s the health of the follicles that determines your chances of fertilization.