When pregnant when do you start showing bump?

Varies: It depends alot on your overall build. Most women will not show until after the first trimester or at least 12-14 weeks and some not until after 20 weeks. Women who are short waisted will tend to show earlier than women with a long waist. A thin woman will show earlier than a heavier set woman. A woman will also usually show later in the first pregnancy than in subsequent pregnancies.