This web site was developed to help patients, physicians, and PET imaging providers learn how PET imaging is used for various types of disease; primarily in detecting, staging and monitoring cancer, but also in heart disease and brain disorders.
If your period is heavy enough to require changing it more often than every one or two hours, or if you have a period that lasts more than a full week, you may have heavy menstrual periods.n fact, many women begin to experience heavy and/or irregular bleeding in their 30s and 40s. Keep in mind it is common for periods to vary in duration and flow, and normal periods can vary from one woman to the next. But the easiest way to gauge your periods is to ask yourself how often you change your pad or tampon.
During your menstrual cycle, the lining of your uterus thickens to get ready for pregnancy. Then, during your period, your body sheds the uterus lining along with blood.The amount of blood and fluid lost is usually between 4 and 12 teaspoons each cycle.The average menstrual cycle lasts 28 days (counting from the first day of bleeding to the first day of the next cycle).For some women, though, cycles can be as short as 21 days. For others, they can be as long as 35 days. A normal period lasts between two and seven days.he average menstrual cycle lasts 28 days (counting from the first day of bleeding to the first day of the next cycle). For some women, though, cycles can be as short as 21 days. For others, they can be as long as 35 days. A normal period lasts between two and seven days.