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3 Weeks Pregnant

When your baby implants in your cushy uterine lining later when you are 3 weeks pregnant, you might notice a little bit of spotting. Nothing to worry about—in fact, it’s your first sign of success.

If you’re feeling tired this week, or you’re convinced that your breasts are achy or are already starting to enlarge, it may not be all in your head. They’re both early signs of pregnancy. You might also be having major mood swings. This is all due to the hormones. Those hormones are also responsible for the unimaginable exhaustion you might feel at all hours of the day.

That sudden urge to pee every 10 minutes is also an early sign of pregnancy. Unfortunately, you’ll keep on peeing with this irritating frequency for the next 37 weeks, so load up on Charmin.

You may even experience the first twinges of morning sickness this week. Once you get that positive pregnancy test next week, you’ll realize it actually wasn’t your partner’s driving that was making you feel queasy (and apologies will probably be in order). It certainly doesn’t help matters that your sense of smell is suddenly sharper than a Labrador’s and everything you get a whiff of makes you want to barf.

If you’ve been charting your body temp trying to peg down ovulation and you find your temperature stays high for a few days, congrats: You’re probably preggo!

This 3 weeks pregnancy starts with what is probably one of the most momentous events in your pregnancy (besides the meeting of egg and sperm and when you actually have the baby): implantation. In other words, your Mini Me or He (technically called a “zygote”) will set up shop in the lining of your uterus this week and hunker down there for the next 37 weeks.

As much as you’d like to think of “implantation” as your baby snuggling down into the quilty softness of your uterus and pulling the covers up for a nine-month nap, the truth is a little less bedtime ritual and a lot more Alien. When the embryo hits the uterus, it releases enzymes that actually eat away at the uterine lining so that it can burrow on in.

Near the end of 3 weeks pregnant, your bouncing mass of cells will start producing its first dribbles of that most famous of pregnancy hormones, human chorionic gonadotropin (hCG). This is the hormone that will be behind most of your pregnancy symptoms in the coming weeks and months. It’s also the one that will show up as a plus sign on that home pregnancy test you’re going to take in a week or so.

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