The fertilized egg or zygote (or two zygotes in case of fraternal twins) begins to divide actively and, within a few days, moves from the uterine tube to the uterus. Once a sperm has penetrated it, the egg’s structure changes so that no other sperm can enter. This also explains why many healthy, fertile couples take a long time to become pregnant. This means that there is quite a short window of opportunity during which conception can occur. Sperm cells vary a lot in the speed at which they swim, so it can take as long as a few days to reach the egg.ĭuring week 3, the sperm cell found an egg ready and waiting in the fallopian tube! So much of this depended upon just the right timing: your egg is released from its ovary around 2 weeks before your next period and sperm cells can only survive up to 5 days after ejaculation. The sperm that is contained within semen then traveled up through the vagina and uterus and into the fallopian tubes. Your pregnancy resulted from your partner’s semen being deposited in your vagina when it was ejaculated from the tip of his penis during orgasm. Your egg remained in the fallopian tube for up to 24 hours - fertilization of the egg by a single sperm occurs during this time. The egg then traveled down a fallopian tube - this is a long duct that runs from the ovary at one end to the uterus, or womb, at the other. Your pregnancy began when an egg, or ovum, was released from one of the two ovaries on either side of your body. Let’s give a quick recap of what got you here in the first place! Even if your high-school sex-ed class is still vivid in your memory, don’t skip this part - it will lay a good foundation for everything that follows. If you’re finding pregnancy difficult for any reason, Flo feels for you - and in the spirit of complete empathy, here’s our friendly guide to week 3 of your pregnancy:
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Naturally, you’ll be thinking about your growing baby and how to care for him or her, but you’ll be going through a lot of physical and emotional changes, too.
Whether your pregnancy was planned or unexpected, you’ll be dealing with a wide range of challenges over the next nine months. There’s no doubt about it: pregnancy can be one of the most exciting times of a woman’s life, but also one of the most anxious.
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