Hi I am 24 years old women. I am in relationship from past 1 year. I have concern regarding my low blood flow during periods. I had regular periods every time. My period starts every 24-27 days. N it used to last for 4 days.(3 days heavy flow n 4th day scanty). Now I am in relation ship wit my bf from past 1 year. V never had sex but v have oral sex n all. Its been six months now since he is fingering me and since then my periods have changed. I mean to say my period flow have changed. Now my periods last only for 3 days (2 days heavy flow and 3rd day less n 4th day nothing) I do not have to use pads also on 4th day. This happened from past 6 months my periods flow have changed. But my periods are regular every month aftr 24-27 days. I never had pains during my periods and even now I do not have. I never had any health problems. Even my haemoglobin is 13. But suddenly this have started. N now I am very scared. Am I suffering from some diseases? Please advise.