Carbon dioxide is a pure substance. A pure substance can be an element or a compound. Carbon dioxide is a pure compound, consisting of two kinds of atoms that are bonded together. An element consists of merely one kind of atom. For example, oxygen is an element.
For Downâs syndrome, a blood test called the quadruple test is available from weeks 14-20 of pregnancy. For Patauâs and Edwardsâ syndromes, you will be offered a mid-pregnancy scan that checks for physical abnormalities.
If you experience brown spotting prior to your next period arriving, then see your doctor. Hi, No this isn't normal hun. This sounds like break through bleeding. This can happen when pregnancy has occured and is usually implantation bleeding or when the doseage of birth control isn't high enough for you. Perform a pregnancy test in 2 weeks. If the test is negative then you aren't pregnant. If you experience brown spotting prior to your next period arriving, then see your doctor. Hi, No this isn't normal hun.