I got my first periods when i was in 7th std. My first periods lasted for more than a month with heavy bleeding. Ever since my hemoglobin is low. I have consulted a gynecologist but nothing has improved, apart from the fact that my cycle last for 5-6days sometimes 8. My periods are irregular or sometimes missed for 2months. This year my last period was on 28th feb, with extreme cramps. But ever i have not got them. Please suggest something.