12 Surprising Third Trimester Symptoms Every Expectant Mother Should Know!
April 2, 2025 | by Roz L

As your pregnancy journey nears its conclusion, the third trimester brings along a host of unexpected symptoms that may catch you off guard. From physical discomforts to emotional shifts, it’s essential to be prepared for the changes your body will experience.
This listicle uncovers twelve surprising symptoms that many expectant mothers face during this crucial stage, helping you understand what to expect and how to cope with these challenges effectively. Embracing knowledge can empower you to navigate this exciting time with confidence and ease.
1. Swelling (Edema)

As your body retains more fluids in the third trimester, you might notice unexpected swelling in your feet, ankles, and hands. This common symptom, known as edema, can be uncomfortable and sometimes alarming. As your growing uterus puts pressure on blood vessels, blood flow can slow down, leading to this swelling.
To alleviate discomfort, consider elevating your feet whenever possible, staying hydrated, and wearing comfortable shoes. Remember, while some swelling is normal, sudden or severe swelling could indicate a more serious issue, so it’s always best to consult with your healthcare provider.
2. Heartburn and Indigestion

The surge of hormones and the pressure from your growing baby can lead to heartburn and indigestion, making meals a challenge. As the baby pushes against your stomach, acid can backflow into the esophagus, causing that familiar burning sensation.
To ease this discomfort, consider eating smaller meals throughout the day, avoiding spicy or greasy foods, and using pillows to elevate your head while sleeping. Over-the-counter antacids may also provide relief, but checking with your doctor before taking anything is always advisable.
3. Increased Fatigue

As your body prepares for labor, it’s not uncommon to feel an overwhelming sense of fatigue. The energy reserves you once had might seem depleted as your body works harder than ever to support the growing baby.
Prioritizing rest is essential during this time. Listen to your body and take naps when you can. Gentle exercises like prenatal yoga can also help boost energy levels, as can a balanced diet rich in nutrients. Remember, it’s okay to lean on friends and family for support during this tiring phase.
4. Braxton Hicks Contractions

You may start to experience Braxton Hicks contractions, often described as ‘practice contractions.’ These sporadic tightenings of the uterus can be surprising and may cause some discomfort. Unlike true labor contractions, Braxton Hicks are usually irregular and do not increase in intensity.
Staying hydrated and moving around can help ease these contractions. It’s a good idea to familiarize yourself with the difference between practice contractions and labor contractions, so you know when to call your doctor.
5. Mood Swings

Hormonal changes in the third trimester can lead to significant mood swings. One moment you may feel joy and excitement about your impending arrival, and the next, you may find yourself feeling anxious or overwhelmed. These emotional ups and downs are completely normal and can be triggered by physical discomfort, fatigue, and the anticipation of becoming a mother.
Finding healthy outlets for your emotions, such as talking with friends, journaling, or engaging in creative activities, can help manage these mood swings. Additionally, consider mindfulness practices like meditation to center yourself during stressful moments.
6. Shortness of Breath

As your baby grows, the space in your abdomen becomes increasingly limited, which can lead to occasional shortness of breath. This symptom can be surprising but is generally not a cause for concern unless it’s severe or accompanied by other symptoms.
To manage shortness of breath, practice good posture while sitting and standing, and engage in gentle exercises that promote lung capacity. When lying down, try to keep your upper body elevated to ease breathing. If this becomes a regular issue, consult your healthcare provider for further guidance.
7. Increased Urination

The third trimester often brings frequent trips to the bathroom, a result of your growing baby pressing against your bladder. This can be both annoying and uncomfortable, especially during the night. While this symptom can be bothersome, it’s essential to stay hydrated for your health and the baby’s.
To minimize disruptions at night, consider reducing your fluid intake in the hours leading up to bedtime. However, make sure you are still getting enough hydration during the day. This phase will pass, and soon you’ll have your little one to care for!
8. Leg Cramps

Leg cramps can strike unexpectedly during the third trimester, often during the night. These painful contractions can be alarming, but they’re typically harmless. They may occur as a result of pressure on the nerves and blood vessels in your legs, combined with hormonal changes.
To alleviate leg cramps, ensure you’re staying hydrated and stretching your legs before bed. If cramps persist, gentle exercises like walking or prenatal yoga can help maintain circulation and reduce occurrences.
9. Skin Changes

The hormonal changes of pregnancy can lead to various skin changes during the third trimester, including stretch marks, increased pigmentation, or the notorious ‘pregnancy glow.’ While some of these changes can be challenging to accept, many women embrace their unique skin journey as a badge of honor.
To help manage stretch marks, consider moisturizing regularly with oils or creams that nourish the skin. Staying hydrated can also promote skin elasticity. Remember that these changes are often temporary, and embracing your body’s transformation is part of the journey.
10. Changes in Hair and Nails

During pregnancy, many women notice changes in their hair and nails, often making them thicker and healthier. However, some may also experience brittleness or hair loss post-delivery. It’s fascinating to see how your body reacts to the hormonal shifts of pregnancy.
To maintain healthy hair and nails, ensure you’re consuming enough vitamins and minerals through diet or supplements. Regular trims and gentle care can also help keep your hair looking vibrant. Embrace these changes and enjoy the beauty that comes with this unique period!
11. Clumsiness

As your belly grows, you may find yourself becoming more clumsy than usual. This could be due to the physical changes in your body and the added weight, which can affect your balance and coordination.
To combat this, focus on moving slowly and deliberately. Wearing comfortable shoes and avoiding slippery surfaces can help reduce the risk of falls. Embrace this phase as part of the journey, and remember that it’s okay to ask for help when you need it!
12. Nesting Instincts

As you approach your due date, you may feel an overwhelming urge to organize and prepare for your baby’s arrival. This ‘nesting’ instinct often kicks in during the third trimester and can manifest as a desire to clean, decorate, or organize your home.
Embrace this burst of energy! It can be a great time to set up the nursery, stock up on baby essentials, and prepare your home for the little one. Just be sure to take breaks and avoid overexerting yourself during this exciting time.
Conclusion

The third trimester is a rollercoaster of emotions and physical changes, with each symptom contributing to the unique journey of motherhood. Understanding these surprising symptoms can help you navigate this final stretch with confidence and grace.
Remember to listen to your body, seek support when needed, and embrace the beautiful chaos of pregnancy. Your experience is uniquely yours, and every moment is a step toward welcoming your new little one.
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