Women with more severe cases of prolonged and continuous periods may want to consider pharmaceutical options. In cases of hormonal imbalance, most doctors prescribe oral contraception or any hormonal therapy to regulate the menstrual cycle and balance your hormone levels.
The bone that you sit on is also known as the sits bones. The  scientific name is the ischium which is a large swelling  posteriorly on the superior ramus of the ischium.
Hip Anatomy - The Acetabular Joint. The hip bone, also known as the innominate bone, coxal bone or os coxae, is a large bone that sits in the pelvis. It is formed by the bones of the pelvis including the ilium, pubis and ischium.