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Tools for Navigating Pregnancy Care
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The Surprising Effects
of Pregnancy

Muscles and joints shift and jostle. The heart’s pounding rhythm speeds up. Blood roars through arteries and veins.


Over the course of a pregnancy, every organ in the body changes. Initiated by a range of hormones, these changes begin as soon as a pregnancy begins.


Explore what we know— and don’t know— about pregnancy's effects on the body and brain.

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Useful Tools:
fertility calculator

This resource explains how ovulation works, signs of ovulation, and things you need to know if you want to conceive.

due date calculator

How pregnant are you? These calculators are based on a 28-day menstrual cycle. Read How Many Months Pregnant Are You?

Are you pregnant?

Take this quiz based on
recognizing the signs and symptoms of early pregnancy. Read Why Do I Feel Pregnant When I'm Not?

choosing a birth control method

What is the right birth control for you? It's the one you want to use based on your values and preferences. This tool by Planned Parenthood can help.

tracking your mentrual cycle

The length of your cycle is measured from that day to the first day of your next period. For most, the average cycle is 28 days, although anything from 21 to 35 days is considered normal in adults. There are many tools available to help you track your periods. We like the Spot On app by Planned Parenthood because it protects your information; some apps don't. While we love the resources at Hello Clue created by the makers of Clue app, we can't recommend the app if you have concerns about keeping your information secure and private.

Free Downloads:
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We like the tone and content of the Health & Pregnancy Guide at WebMD. But it is not a good resource for comprehensive information about substance use, pregnancy, and parenting.

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When considering a urine drug test (UDT) to screen for substance use
Ask Yourself:  What does pee tell you?
The Answer:   Not a lot.
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