Ecology, Evolution and Genetics. Solutions to many of the world's most pressing environmental issues require a basic understanding of nature at the organismal, population and ecosystems level.
Average. On average, women start to show around the fourth month of pregnancy, between weeks 14 and 17. By week 17 the uterus usually has expanded to just an inch and a half below the navel, making the pregnancy more obvious.
There isn't a set time when moms-to-be start sporting an obviously pregnant belly â every woman is different. Some women keep their pre-pregnancy belly far into the second trimester, while others start showing in the first trimester.