The answer is yes, and there are several explanations. Some women have menstrual cycles lasting less than 28 days. If a woman's cycle lasts 22 days, and she ovulates at mid-cycle, a pregnancy is possible on day 11. Wed M... More »

The most fertile days of a woman's menstrual cycle are when she is ovulating, generally between days 11 and 14, though it varies between women, according to MedlinePlus. Since ovulation varies, doctors recommend that cou... More »

According to Everyday Health, a short menstruation period may be caused by low estrogen levels, early pregnancy, menopause, birth control, thyroid disorder, polycystic ovary syndrome, weight loss, excessive exercising, e... More »

Perimenopause, extreme weight gain or loss, stress, medications, an endocrine disorder and metabolic syndrome can all create fluctuations in the menstrual cycle that can cause menstruation to occur earlier than usual, ac... More »

Bloating can occur up to two weeks before the start of the menstrual cycle through to the end of menstruation, according to Mayo Clinic. While hormonal changes, hereditary factors and diet cause bloating, there are some ... More »

A woman can alter her menstruation cycle by deviating from the instructions associated with hormonal contraceptives, states a study conducted by the University of Oregon. By not following the instructions, a woman is cap... More »

A menstrual period with a bright red and orange color can be normal since the colors of menstruation vary throughout the cycle. Women can experience bright red periods as well as blood with a dark brown or black color, W... More »