Page 3 â Measuring time in different cultures. Measuring time. Scientifically, the year is a complete cycle of seasons. A year is when the earth completes one full orbit of the sun. Its length is measured from one spring equinox to the next spring equinox. Measuring the time of year was important to most people. Knowing the season was vital when deciding to plant and harvest crops as well as managing livestock in colder climates.
Experts have believed for a long time that pregnancy weakens a womanâs immune system, making her more susceptible to illnesses like the flu. However, research released just before the start of this flu season indicates that, in the case of the flu, the opposite may be true during pregnancy.
Fatigue: Fatigue can be a sign of PMS or pregnancy, though fatigue has many possible causes. During the latter stages of pregnancy, anemia can cause fatigue, but more often the cause is probably just a need for more rest! In some women, fatigue can be the very first sign of pregnancy. Since fatigue is so common, it is not a reliable sign as to whether you might be pregnant or not. PMS fatigue, like most PMS symptoms, usually gets better with the onset of the period. Fatigue that gets worse during the blood loss of the menses could be a sign of anemia. Fever: Fever is not a normal symptom of either pregnancy or PMS.