What are the three stages of pregnancy?
Pregnancy normally lasts 40 weeks, counting from the first day of your last normal menstrual cycle. These weeks are separated into three trimesters, or general stages of fetal development.
What happens during the first trimester?
In the first 12 weeks of pregnancy, your body undergoes major hormonal changes that stop your menstrual cycle and affect nearly every system in your body. These changes can cause a variety of symptoms, including:
- Extreme fatigue
- Tender, swollen breasts
- Mood swings
- Morning sickness
- Aversion to certain smells
- Food cravings or repulsions
- Frequent urination