Why Is The Menstrual Cycle Suppressed During Pregnancy?
The first thing most women notice when they are pregnant is a missed menstrual cycle. It is a balance of hormones from the thyroid that controls the natural cycle each month when there is no pregnancy. These hormones are naturally increased during pregnancy and include estrogen, progesterone, human chorionic gonadotropic (hCG) and prolactin (or human placental lactogen–HPL). The increased levels of these hormones suppresses the menstrual cycle to accommodate the pregnancy.
