Although many women nowadays have regular gynecological checkups every year, there are still a large number of women who insist on “tolerating what they can”, especially unmarried women who have already had sex, and they tend to ignore gynecological problems and gynecological checkups, and when the problems are serious, it is too late to seek medical attention. Many women who are found to have advanced cervical cancer in their twenties are typical representatives. So, what symptoms do women need to see a gynecologist? 1. No menstruation at the age of 18. 2.No breast development and more body hair. 3.Amenorrhea for more than six months after the first menstruation, or sudden amenorrhea for more than two months after regular menstruation. 4.Irregular menstruation, such as excessive menstruation, too little menstruation or menstrual cycle disorder. 5. Dysmenorrhea. Painful menstruation every time you have a period since the first menstruation, or suddenly painful menstruation for several months in a row, both cases need to go to the gynecology department to find out the cause in time. 6. Abnormal leukorrhea. Normally, female leucorrhea should be milky white or colorless and transparent, slightly fishy or odorless. If there is more leucorrhea with foul odor, or leucorrhea with color, with pus and blood, it is abnormal. 7.Itching of vagina, or redness, swelling, pain, erosion and ulceration of vulva. 8.Faint soreness in the lower abdomen, or lump to touch. 9. Pain after sexual intercourse, or even bleeding. 10., Normal sexual life for more than one year without contraception, but unable to get pregnant.