i had used condoms while having intercourse with my boyfriend...& i am supposed to gt my mensturation by now...bt i didnt gt it yet.... evn my menturation is not regular it stops at times for a month or two.... last time whn i had my mensturation ws in may....it ended on may 16...i m worried if i get pregnant......i had intercourse with my boyfriend on 27 june.........is there any way to avoid pregnancy..... plzzz help yaaar..... reply as soon as possible.......