I Had Intercourse On 18 September(around 1.5 Months Before), The

i had intercourse on 18 September(around 1.5 months before), the condom burst and within 24 hours i took 2 ipills and 15 days after that i had my regular periods even though they were very painful. Now, on 25 October 2015, we did not have proper sex but he just inserted in me and did not finish in me, but for safety purposes i took an ipill, my period was due on 29 October 2015 but i have no got it yet, even though there are slight cramps. Are there any chances of pregnancy? Please help.