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.
When you sit down, your gluteal muscles move aside to reveal the sitting bones, which rejoice in the name of ischial tuberosities in anatomy textbooks. Hold your fingers there for at least 30 seconds and remind yourself that these are your sitting bones. You can rock backwards and forwards slightly if you can bear it.