Estrogen levels vary in different women at different stages of the menstrual cycle. The normal range for women is 48 to 5215 pmol/L before ovulation, 272 to 7935 pmol/L during ovulation, and 272 to 7935 pmol/L after ovulation. Estrogen levels in a woman’s body change with the menstrual cycle, and estrogen levels reflect the function of the ovaries. Usually before ovulation, estrogen levels are low at 48~5215 pmol/L. After ovulation, estrogen levels increase to 70~18355 pmol/L. After ovulation, the range is 272~7935 pmol/L. Women’s estrogen levels are different at different physiological stages. After pregnancy, estrogen levels will gradually increase as the number of weeks of gestation increases, and after menopause estrogen levels will decrease significantly. In case of abnormal estrogen levels, it is recommended to seek prompt medical attention and appropriate treatment under doctor’s guidance to promote relief of discomfort.