What is a common early sign that a girl may be pregnant?

A missed period is a significant early sign that a girl may be pregnant, as it often indicates that the body is undergoing hormonal changes typical of pregnancy. Menstruation typically occurs on a regular cycle, so if a girl has a missed period, it can be one of the first physical indicators that she might be expecting. This sign prompts many to take a pregnancy test or seek medical advice to confirm a pregnancy.

While other options like increased appetite, fatigue, and nausea can also be associated with early pregnancy, they are not as definitive as a missed period. For instance, increased appetite can be influenced by many factors unrelated to pregnancy, fatigue can result from stress or lack of sleep, and nausea might occur for various reasons, including gastrointestinal issues. However, a missed period is more directly linked to pregnancy and is often the first noticeable change that prompts further investigation.