If you Google "when is the 3rd trimester," it's often because you want to know if you're "heavily pregnant," what your body might start to demand, and what's smart to get in order before birth. Briefly, the 3rd trimester typically runs from pregnancy week 28 until birth. Some sources state week 27 as the start, as the division can vary slightly depending on whether you count from week 0 or from conception. In practice, many pregnant women and professionals use week 28 as a simple rule of thumb.

The 3rd trimester usually starts at the beginning of week 28. This is a good guideline if you want to plan check-ups, maternity leave preparation, and more practical things at home.

If you are unsure about the week number, check your due date and the week indication you get in your pregnancy app or from your midwife. The important thing is not the precise "date of trimester change," but that you know the last part of pregnancy typically involves more weight on the abdomen and pelvis and a greater need for breaks and support.

The 3rd trimester typically covers weeks 28 to 40 (and for some, also the weeks after the due date if labor starts later). It is during this period that many notice their bodies working "heavier," and daily life may need to be adjusted.

The term "heavily pregnant" is used differently, but many refer to themselves as heavily pregnant in the 3rd trimester, especially in the last weeks leading up to the due date. It can be completely normal to need to prioritize sleep, rest, and relief more.

There is a big difference in how the 3rd trimester feels, but some experience more fatigue, a sensation of heaviness, discomfort in the lower back and pelvis, Braxton Hicks contractions, and more downward pressure. This is often where small adjustments make a big difference: shorter activities, more breaks, good resting positions, and support for the abdomen and back.

If you experience symptoms that concern you, change significantly, or feel "wrong" to you, contact your midwife, doctor, or maternity ward. You shouldn't be alone with your worry, and it's always okay to ask again.

In the last part of pregnancy, much is about making things easy for yourself: getting practical arrangements in order, thinking about transportation to the birth location, and making a simple plan for the first days at home. Many also benefit from preparing a hospital bag well in advance so you don't have to think about it when energy fluctuates.

• Gather important papers.
• Pack comfortable clothes.
• Bring basic personal hygiene items.
• Bring anything you know can give you peace of mind.
• Keep it simple and adjust along the way.

As the belly gets heavier in the 3rd trimester, extra support in everyday life can be helpful, especially when walking, standing, and doing household chores. If you're looking for support for your abdomen and lower back, you can check out Support Belts, and a specific choice might be the Adjustable Support Belt, which can be adjusted as your body changes.

Many also find that their breasts change in size and feel more sensitive. Here, it's important to choose a bra without an underwire. One option is the Gel-Support Maternity Nursing Bra, which provides support without an underwire and is designed to adapt to the body throughout pregnancy and breastfeeding.