Some people says you drink any hot coffee,chocolate or tea and make rest.but it will not affect to you,my grandmother told me it is better to take a little drink of wine,so that your mind and body will become relaxed and your menstruation will released faster.
Many girls have their own definition of menstrual flow problems. It is possible that you are not having any clinical problem but feeling yourself. So, advice from the doctor is necessary. You can simply increase fluid intake and take aspirin to improve menstrual flow.