the executive power of the federal government is vested in the president. the president has the power to appoint ambassadors, members of the Cabinet, Justices of the Supreme Court and Judges of the lower Federal Courts.
Page Content. Menstrual irregularities can be caused by a variety of conditions, including pregnancy, hormonal imbalances, infections, malignancies, diseases, trauma, and certain medications. Common causes of anovulatory bleeding (absent, infrequent periods, and irregular periods) include: Adolescence. Uncontrolled diabetes.
Aside from the possibility of pregnancy or hormonal imbalance in women who experience PMS symptoms but no period, other probable causes include: 1  Anxiety, physical or mental stress, or tension, which can result in a missed or delayed period.  Use of contraceptive pills, which can result in absence or delay of a period.