In the 3rd trimester (approximately week 28 to birth), the baby grows rapidly, and many pregnant individuals become curious: How much weight does the baby actually gain per week? The short, reassuring answer is that weight typically increases the most in the latter part of pregnancy, but that there are large normal variations. The baby's weight is often assessed by scan, and even there, there is inherent uncertainty. Therefore, use numbers as guidelines and not as an exam you can fail.

Towards the end of pregnancy, the baby often gains more weight week by week than before. Many professional overviews describe that weight gain in the 3rd trimester typically falls within a range, but it can fluctuate depending on genetics, placental function, amniotic fluid, and how far along you are.

• Ask for a range rather than a single number when you get an assessment from your midwife or during a scan.
• Preferably compare with the baby's own growth curve from previous measurements, if available, rather than comparing with others' numbers.
• Remember that ultrasonically estimated fetal weight can deviate from the actual weight, so small fluctuations are not necessarily a sign that something is wrong.

When you search for "normal fetal weight," you will often find week-by-week tables. These can be good for providing an overview, but they can also cause unnecessary anxiety because the normal range is broad.

• Use tables to understand the "approximate level," not to calculate an exact weight.
• Place most emphasis on what your midwife emphasizes: signs of well-being, movement in the womb, measurements, and your overall pregnancy history.

It is completely normal that weight gain does not follow a straight line. Some babies gain weight steadily, while others have periods of more and less growth.

• Heredity and family body type
• Placental efficiency and blood flow
• Your body's natural variation in fluid and energy needs
• Measurement uncertainty in scanning and due date determination

If your midwife or doctor becomes concerned about too low or too high growth, they will typically follow up with extra checks and guidance so you are not left alone with the worry.

The most important thing is not to "hit a certain number" but that the baby is thriving. Contact the labor ward or your midwife if you experience anything that clearly deviates from what is normal for you.

• Significant change in the baby's movements (less movement than usual)
• Bleeding, persistent severe pain, or sudden malaise
• Persistent headache, vision disturbances, or rapidly increasing swelling (needs assessment)

As the baby grows, your belly can feel heavier, and your back and pelvis can become more strained. Practical support can make everyday life more manageable.

Many find relief from a support belt, which can alleviate pressure when walking or standing for longer periods. See for example Support Belts and a specific product like Maternity Support Belt.

If you also notice that your breasts are changing and becoming more tender late in pregnancy, an underwire-free nursing bra with flexible support can be gentler than metal underwire. An example is the Gel-Support Maternity Nursing Bra, where the gel support is designed as a supportive alternative that can adapt to body changes without blocking milk ducts.

For days when you just want comfort and as little restriction as possible, seamless designs can also be helpful, as they typically feel more "accommodating" when the body changes shape. Here you can see Leggings and for example Seamless Maternity Support Leggings.