How long does it take for a pregnant woman to get noticably big?

It takes on average 16-20 weeks for a pregnant woman to start to "show" or appear noticeably pregnant. However, the timing can vary widely from woman to woman, depending on several factors such as:

1. Body Type: Women who are naturally thinner may start showing earlier than women who carry more weight.

2. First vs. Subsequent Pregnancies: The uterus typically relaxes and stretches more easily in subsequent pregnancies, so women may show earlier.

3. Multiple Pregnancies: Carrying multiples (e.g., twins, triplets) can cause a woman to show sooner as there is a larger volume of growth.

4. Abdominal Muscles: Stronger abdominal muscles may hold the uterus in place and make a visible baby bump less noticeable.

5. Placental Position: If the placenta is located at the front of the uterus (anterior placenta), it may provide some cushioning, making the bump less noticeable.

6. Height and Posture: Taller women may show less prominently than shorter women due to the vertical space. Good posture can also contribute to a smaller appearance.

7. Lifestyle and Clothing: Certain clothing choices, such as loose-fitting clothing, can help to camouflagde the bump for a longer time.

In general, most pregnant women start to feel their uterus rising above the pelvic bone around week 12-14. By week 18-20, the fundus (top of the uterus) should reach the navel. While these are guidelines, it's essential to remember that every pregnancy is unique, and the timing of visible changes may vary. If you have any concerns or questions, it's best to consult with your healthcare provider.