First Trimester

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The First Trimester

Week 1-12


Why do I feel tired and nauseous during the first weeks of pregnancy?

As soon as you conceive, the estrogen and progesterone in your blood increase, causing certain physiological changes. Throughout your pregnancy, your hormones will work constantly to signal your body to make the necessary changes for your baby and prepare your body for birth and beyond. The first trimester or 12 weeks of pregnancy can often be difficult, caused by the surge of hormones. But rest assured that high levels of progesterone and estrogen are critical in maintaining your pregnancy and preparing your body for child birth.

What kinds of symptoms should I expect to experience during my first trimester?

Extreme tiredness and fatigue Tender, swollen breasts Upset stomach with or without vomiting (morning sickness) Craving or distaste for certain food Mood swings Constipation Headache Heartburn Feeling sick is a good sign that your pregnancy hormone levels are high.

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