Hello, I am 19 years old & have had my period for 5 years now. My periods have generally been VERY regular & come approximately every 28 days. In May, my period came early (after 23 days.. which is about 5 days early for me). In June, my period came after 24 days.. It is now July. When should I expect my period? It has been 27 days since my last period.