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Trimester by Trimester: What Your Body Goes Through During Pregnancy

Pregnancy is an incredible journey, divided into three trimesters, each marked by unique changes in your body and your baby’s development. A full-term pregnancy lasts about 40 weeks, but each stage comes with its own experiences, milestones, and challenges.

First Trimester: The Foundation Stage

The first trimester (weeks 1-12) is when your body undergoes rapid changes, fueled by hormonal shifts. These changes often bring early symptoms, such as:

  • Fatigue
  • Tender, swollen breasts
  • Nausea or morning sickness
  • Food cravings or aversions
  • Mood swings
  • Frequent urination

For some women, these symptoms may feel overwhelming, while others may not experience discomfort at all. As your body adjusts, small changes to your routine, like eating frequent meals or getting extra rest, can make a big difference.

Second Trimester: The “Golden Period”

Often considered the easiest phase, the second trimester (weeks 13-28) brings relief from early pregnancy symptoms like nausea and fatigue. During this stage, your baby starts to grow rapidly, and you’ll notice exciting changes, such as:

  • Feeling your baby move for the first time!
  • A growing belly
  • Stretch marks
  • Darkening skin around the nipples 

You may also experience discomfort, such as body aches, itching, or mild swelling. However, staying active and hydrated can help manage these changes.

Third Trimester: The Final Countdown

The third trimester (weeks 29-40) is all about preparation. Your baby is growing quickly, which can increase pressure on your organs. This might cause:

  • Shortness of breath
  • Heartburn
  • Haemorrhoids
  • Urinary incontinence 
  • Trouble sleeping
  • Swelling in the ankles, fingers, and face

As you approach your due date, you may notice your baby “dropping” lower in your abdomen, which can ease breathing but increase trips to the bathroom. Your doctor will monitor your cervix for thinning and softening (effacing), a natural process that prepares your body for labor.

Reference:

  1. Stages of pregnancy, Available at: https://womenshealth.gov/pregnancy/youre-pregnant-now-what/stages-pregnancy, last accessed on 16th December 2024. 
  2. Pregnancy, Available at: https://www.ucsfhealth.org/conditions/pregnancy#The_Three_Trimesters, last accessed on 16th December 2024.