Hi Sir Lastmonth My Wife Period Was 23-02-2016 . In

hi sir lastmonth my wife period was 23-02-2016 . in march month 18-03-2016 we have unprotected sex and both of them joined . on 19-03-2016 my wife took postpone 72 at 9pm . still now there is no period for my wife ,but she has a pain in abdomen and waist and leftleg pain . is there any chance for pregnancy or periods.