The sudden increase in libido in the second month of pregnancy is mainly related to the increase in hormone levels in the body and so on. After pregnancy, the hormone levels in the body will change, the estrogen and progesterone levels continue to increase, pelvic congestion, which will cause women to have an increased libido phenomenon. In addition, more than 2 months of pregnancy early pregnancy reaction may also gradually reduce, with the development of the fetus increased uterus pressure bladder, when there is urine filling will press the vagina, causing vaginal spasm, will also lead to increased libido, generally belong to the normal physiological phenomenon. Increased libido in the second trimester of pregnancy does not require special treatment, but attention should be paid to avoid sex, because the first 3 months of pregnancy, the embryo and the uterine wall connection is not yet close enough, such as sex to stimulate uterine contractions, there may be abdominal pain and vaginal bleeding and other phenomena such as aura of miscarriage, to be appropriate to divert attention to, such as reading a book or to participate in some outdoor activities, and so on. It is generally recommended to wait until the middle of pregnancy can be appropriate sexual life, pay attention to sexual hygiene, avoid too frequent.