During pregnancy, a woman's body goes through a number of changes as it prepares to bring new life into the world. One of the most noticeable changes can be the appearance of a protruding belly button. While this might seem strange or uncomfortable at first, it's actually a perfectly normal part of the pregnancy experience.

So why does the belly button start to stick out during pregnancy? Well, it all comes down to the way that the body is expanding to accommodate the growing fetus. As the baby grows, the uterus expands, pushing the abdominal muscles and skin outwards. This pressure can cause the belly button to pop out, creating what is commonly referred to as an "outie" belly button.

For some women, the protruding belly button can be a source of discomfort or even pain. The skin around the belly button can become sensitive or itchy, and the pressure on the abdominal muscles can cause cramping or discomfort. However, most women find that these symptoms are mild and can be managed with gentle stretching exercises or by wearing loose, comfortable clothing.

It's worth noting that not all women will experience a protruding belly button during pregnancy. In fact, some women's belly buttons might stay completely flat or even start to sink inwards as the baby grows. This is perfectly normal, and doesn't necessarily indicate any problems with the pregnancy.