• mature ovarian follicle on day 12 of menstrual cycle
    Week 2 of Pregnancy
    Day 12 of your Menstrual Cycle
    What's happening insideThis mature ovarian follicle contains a fluid-filled cavity (pale pink) known as the follicular antrum. At this stage, just prior to ovulation, one follicle has become much larger than the others, and it is this follicle th...
  • sperm cell traveling along fallopian tube
    Week 2 of Pregnancy
    Day 13 of your Menstrual Cycle
    What's happening insideThe sperm cell can be seen here inside the fallopian tube. Since sperm can stay active and alive inside you for up to 72 hours, it's possible to get pregnant even if you don't ovulate for two to three days from now. ...
  • Sperm on Day 9 of Menstrual Cycle
    Week 2 of Pregnancy
    Day 9 of your Menstrual Cycle
    What's happening insideIn your partner's body, sperm is constantly being produced. Here the sperm cells can be seen: they consist of a head, which contains the genetic material, and fertilizes the egg, and a tail, which propels the sperm along. ...
  • cervical mucus on day 10 of menstrual cycle
    Week 2 of Pregnancy
    Day 10 of your Menstrual Cycle
    What's happening insideAs ovulation approaches, more cervical mucus is produced. Here it has crystallized to form a "fern leaf" pattern. Around the time of ovulation the mucus becomes clear, slippery, and stretchy, which makes it easier for sperm...
  • ovarian follicles on day 8 of menstrual cycle
    Week 2 of Pregnancy
    Day 8 of Your Menstrual Cycle
    What's happening insideHere, three developing ovarian follicles can be seen in white. The inner circle of each is the egg. Of the follicles shown, it is likely that only one will fully mature at ovulation and release an egg. ...