Some girls may start menstruating as early as age 10, but others may not get their first period until they are 15 years old. The amount of time between a girl's periods is called her menstrual cycle (the cycle is counted from the start of one period to the start of the next). Some girls will find that their menstrual cycle lasts 28 days, whereas others might have a 24-day cycle, a 30-day cycle, or even longer.
A barium swallow is a special type of X-ray test that helps your doctor take a close look at the back of your mouth and throat, known as the pharynx, and the tube that extends from the back of the tongue down to the stomach, known as the esophagus.
Risks and Complications of Barium Swallow Although radiation exposure is still minimal, you will receive a higher dose of radiation during fluoroscopy than during standard x-ray procedures. The barium may accumulate and block the intestines if it is not eliminated from your system within a day or two. After Barium Swallow. Air in your stomach may cause you to feel slightly bloated for a short while. Drink plenty of fluids to help eliminate the barium from your system.