How long does it take before someone else can tell that you are pregnant?

It depends on the individual and their specific circumstances. In general, it is usually not noticeable until the second trimester of pregnancy, which begins at around 14 weeks of gestation. During the first trimester, the uterus is still relatively small and located low in the pelvis, so it usually isn't visible. As the pregnancy progresses and the uterus grows, it begins to rise in the abdomen, eventually causing a noticeable baby bump. However, it can be different for each person, and the bump may be more or less noticeable depending on factors such as body type and clothing. Additionally, some women may experience a more noticeable "pregnancy glow" due to increased blood flow to the skin. For most pregnancies, the baby bump becomes noticeable around 16 to 20 weeks, but it can show earlier in some cases or be less noticeable in others.