Option 1: Check your menstrual cycle The first way to quickly find out if you are pregnant is by looking at your menstrual cycle. If a woman has a stable menstrual period under normal circumstances and suddenly does not have a period, she may be pregnant. It is recommended that women should count their menstrual cycles and record the length of each monthly cycle and the time of the last menstrual period before confirming pregnancy. If the interval exceeds 26 days or exceeds the average monthly duration, you are likely pregnant. In addition, as pregnancy progresses, the size and quality of the breasts