me and my gf meets every month and have sex......but on december last as usual we were having sex but dis time the condom i was using torn out and i was nervous and given her ipill within 6hrs, she got her periods on time but again this time i had sex on january 1week and with more precaution i used two condoms for safety reason....but this time she missed her period ...

my question is whether because of the ipill she consumed last month the period is not on time or else she need some test to be done