Confuzed.. Female Help Wanted?

Ok, so May 28 ago my boyfriend and ii had sex & he came in me. my period iz not due to June 14 bt it came today which iz June 9th-10th. so far it apearz regular bt it came EARLY! like 4-5 Dayz before. This never happened b4. could i be pregnant? Haz this ever happend to you b4?