The bleeding that occurs while you take the inactive pills isn't the same as a regular period. Nor is the bleeding necessary for health. This is good news if you take birth control pills and want more control over your menstrual cycle, either for personal or medical reasons.
To prepare for the glucose tolerance diagnostic test: 1  Eat a balanced diet that contains at least 150 grams (g) of carbohydrate per day for 3 days before the test. Fruits, breads, cereals, grains, rice, crackers, and starchy vegetables such as potatoes, beans, and corn are good sources of carbohydrate.
1 The glucose test determines how your body regulates and processes insulin. 2  You should continue to eat normally and not make any drastic changes to your diet in an attempt to pass the test. 3  Eating a balanced diet is best. 4  Include carbohydrates, fruits, vegetables, grains and rice in your diet. Some doctors ask you to fast from midnight the day of your diabetes screen. 2  Others will not. 3  It is important to find out what the doctor who will be doing your test asks of you.