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.
Some women do not start to show until they are well into their second trimester or even the start of their third trimester. If you are overweight at the start of your pregnancy, you may not gain as much weight during your pregnancy and may not begin to show until later into your pregnancy.Average: 3.591215.ome women do not start to show until they are well into their second trimester or even the start of their third trimester. If you are overweight at the start of your pregnancy, you may not gain as much weight during your pregnancy and may not begin to show until later into your pregnancy. Average: