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.
Image: Film Magic/Film Magic/Getty. Stress is the most common cause of irregular periods. Cortisol, the stress hormone, has a direct impact on how much estrogen and progesterone, two sex hormones, gets produced by the body. If you have too much cortisol in your bloodstream, the time and flow of your cycle could change.
Thanks for your question. It can be normal for women to skip some periods even if they are not pregnant. There are many reasons for missed or delayed periods. The most common causes are pregnancy (as you have mentioned), breastfeeding and menopause. Other reasons include a recent change in weight (either weight loss or gain), stress (such as emotional stress or physical stress from illness or very strenuous exercise), medication side effects and hormone problems.