Hormones
Pregnancy is a time of massive change on just about every level. Your body is changing all the time: Hormones affect everything from hair to skin to joints to emotions to the way you solve problems and perceive the world. They can cause sleepiness, weight gain, nausea, breathlessness, sluggish digestion & ravenous hunger, to name just a few. Hormones are engine behind the pregnancy and they'll be at work long after the baby is born for breastfeeding and helping your body adjust back to a non-pregnant state.
So while hormones do change at around thirteen weeks, they continue flowing and changing for a while. Pregnancy hormones are not all bad; sometimes their affects are welcome or at least manageable, but sometimes they're traumatic or just rotten. Either way, it's a huge upheaval and can trigger an avalanche of emotions. Plus you're growing for the first time since adolescence: in the first trimester you actually grow a whole new organ!... Read more advice from Rebecca Odes and Ceridwen Morris in Parental Advisory
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