Suggest Treatment For Irregular Periods

Hi i stopped getting periods in oct 2010 all of a sudden then i got them after 8 days on its own. Again i did not get periods from dec 2010 till april 2011 then i consulted a homoepath with that i starting getting my periods every month. Then i got heavy periods from apr 2011 till june 2011 monthly and I started feeling weak. I went to my gynac she had all the tests done and my heamoglobin was 7, she gave me 3 iron saline drips in one week and i was fine and she adviced regestrone 5mg sandoz for 20 days to stop heavy flow. After that i got my next periods regularly till now. Now again I have the same problem of periods not stopping in jan 2012, i have started taking regestrone 5mg sandoz again but i need a permanent solution to have my regular periods. I am 31yr old married since 7yrs and have a 5yr old son. Can you help?