Hi, You are going in climacteric period which is transition phase of menopause And you may get symptoms of irregular menstruation (less days or amount bleed longer duration ), altered libido , mood change ......etc. So having craving for sex is normal n need not to worry . Masturbating is the way of getting sexual gratification by own either with finger or artificial object resembling male genitalia . But there are chances of getting injury in your private parts so should avoid it. So try to avoid it by making yourself busy in some activity and you ll adapt to the situation later. You can take help of neurophyscian/gyne if disturbing . Thanks n regards