Why Do My Menses Occur Early Than Expected?

hello..im married.im 26 years old.5'2 inches tall and 48 kg. i had miscarriage w my second baby and having an raspa operation after this happen my mentration period comes early.it was happened one year ago.every time my period comes by month it comes too early. my last menstruation is may 16 to 20 and now i have my mentrual period is it too early or normal..thank you...