A negative result can mean that you are not pregnant, you took the test too early, or you took the test wrong. Pregnancy tests vary in their sensitivity (how soon they can detect the hormone hCG), and you may not have given your body enough time to produce enough hCG hormones that will show up on the test. Also, if you let a test sit for too long (after the instructions on the box tell you), the test is invalid.
1 Certain types of food are known to cause flatulence and bloating. 2  Foods that are high in carbohydrates and starch such as beans, cabbage, broccoli, white bread and refined flour can result in an excess of gas trapped in the digestive system.3  Many of these foods can cause exceptionally foul smelling gas as well. Many of these foods can cause exceptionally foul smelling gas as well. 2  Foods such as red meats (especially ground beef) and fatty foods release gases such as hydrogen, methane and carbon dioxide during the digestion process.
Flatulence is a medical term for releasing gas from the digestive system through the anus. It is also commonly known as farting, passing wind, or having gas.It occurs when gas collects inside the digestive system. Gas collects in two main ways.First, when you swallow air during eating or drinking, oxygen and nitrogen collect in the digestive tract. Second, as you digest food, digestive gases such as hydrogen, methane, and carbon dioxide collect. Either case can cause flatulence.irst, when you swallow air during eating or drinking, oxygen and nitrogen collect in the digestive tract. Second, as you digest food, digestive gases such as hydrogen, methane, and carbon dioxide collect. Either case can cause flatulence.