Do varicose veins get worse during pregnancy? 

Yes, varicose veins frequently get worse during pregnancy or may develop for the first time during this period. This occurs due to a combination of significant hormonal changes, a substantial increase in blood volume, and the physical pressure exerted by the growing uterus on the pelvic veins. While these veins often improve after childbirth, the strain placed on the venous system during pregnancy can lead to long-term valve damage. 

What We will cover in This Article 

• The biological reasons why pregnancy impacts vein health 

• The role of progesterone in relaxing vein walls 

• How increased blood volume places extra stress on the valves 

• Physical triggers like pelvic pressure and reduced activity 

• Identifying symptoms of pregnancy-related venous insufficiency 

• Practical ways to manage vein discomfort during each trimester 

Why Pregnancy Triggers Vein Changes 

The body undergoes profound physiological shifts during pregnancy that directly affect how blood returns from the legs to the heart. Three primary factors contribute to the worsening of varicose veins during this time. 

First, the body produces higher levels of the hormone progesterone. While essential for a healthy pregnancy, progesterone also relaxes the smooth muscle in the walls of the blood vessels. This relaxation makes the veins more prone to stretching and dilation under pressure. Second, the total volume of blood in the body increases by up to 50% to support the developing baby. This extra fluid means the valves in the leg veins must work significantly harder to pump a larger amount of blood against gravity. 

Finally, as the uterus grows, it puts direct physical pressure on the inferior vena cava the large vein on the right side of the body that carries blood from the lower limbs back to the heart. This pressure acts like a bottleneck, slowing down the return of blood and causing it to pool in the legs and pelvic region. 

Symptoms and Sensations in Pregnancy 

Venous symptoms during pregnancy often go beyond visible bulging veins. Many women experience a range of sensations that can impact their daily comfort and mobility. 

Sensation	Description in Pregnancy
Heavy Aching	A leaden feeling in the legs that intensifies as the day progresses.
Swelling	Puffiness around the ankles and feet, often making shoes feel tight.
Vulvar Varicosities	Swollen veins in the pelvic and vaginal area due to pelvic pressure.
Night Cramps	Sudden, painful contractions in the calves or feet during sleep.

These symptoms are typically at their most intense during the third trimester when the weight of the baby is greatest and the blood volume is at its peak. Many women also notice that their symptoms are worse in the evening or after standing for long periods, such as while cooking or working. 

Managing Vein Health During Pregnancy 

While you cannot change the hormonal or physical demands of pregnancy, you can take steps to reduce the pressure on your veins and alleviate discomfort. 

1. Keep Moving: Regular, gentle activity like walking or swimming engages the calf muscles, which help pump blood out of the legs. 

2. Elevate Your Legs: Whenever you are sitting or lying down, try to keep your feet above the level of your heart to let gravity assist your circulation. 

3. Sleep on Your Left Side: This position helps take the weight of the uterus off the inferior vena cava, improving the flow of blood from your legs. 

4. Wear Compression: Medical-grade maternity compression tights provide external support to the vein walls, preventing them from over-stretching and reducing swelling. 

It is also important to avoid crossing your legs when sitting and to move around frequently if your job requires long periods of sitting or standing. These small adjustments can significantly reduce the ‘heaviness’ felt at the end of the day. 

Post-Pregnancy Recovery 

The good news for many women is that pregnancy-related varicose veins often improve or even disappear within three to twelve months after giving birth. As the uterus shrinks and blood volume returns to normal, the pressure on the venous system is relieved. 

However, if the veins were severely stretched or if there is a strong family history of the condition, the valves may remain permanently damaged. In these cases, the veins might become less visible but could flare up again during subsequent pregnancies or later in life. If the veins remain painful or bulging a year after delivery, it may be beneficial to seek a clinical assessment to discuss long-term management options. 

My final conclusion 

Varicose veins commonly worsen during pregnancy due to the combined effects of hormones, increased blood volume, and physical pressure on the pelvic veins. While the symptoms are often most uncomfortable in the later stages of pregnancy, they frequently improve after childbirth as the body recovers. Managing the condition through movement, elevation, and compression is the best way to maintain leg health during this transformative time. You may find our free Pregnancy Due Date Calculator helpful for monitoring your progress and planning your recovery. 

If you experience severe, sudden, or worsening symptoms, call 999 immediately. This is particularly important if you notice sudden, painful swelling in only one leg or if you experience sudden chest pain or shortness of breath. 

Authority Snapshot 

 Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.