How long do you have to be pregnant for your pregnancy show?

There's no hard and fast rule on when a pregnancy will start to show, as it varies from woman to woman. However, for the majority of women, their pregnancy will start to show around week 12 to week 16. For some women, their pregnancy may not show until week 20 or even later, especially if they are carrying low or have a small frame. There are a few things that can affect how early or late a pregnancy starts to show, including:

- Body size: Women who are naturally slim or have a small frame may start to show earlier than women who are larger or have a more muscular build.

- Weight gain: Women who gain weight rapidly during pregnancy may start to show earlier than women who gain weight slowly or lose weight during pregnancy.

- Uterine position: The position of the uterus can also affect how early or late a pregnancy starts to show. If the uterus is tilted back, it may not start to show as early as if it is tilted forward.

- Multiple pregnancy: Women who are pregnant with multiples (e.g. twins, triplets, etc.) will typically start to show earlier than women who are pregnant with a single baby.

- Previous pregnancies: Women who have been pregnant before may start to show earlier in subsequent pregnancies than they did in their first pregnancy.

It's important to remember that every pregnancy is different, and there is no one-size-fits-all answer to when a pregnancy will start to show. If you're concerned about whether or not your pregnancy is progressing normally, it's always a good idea to talk to your doctor.