On 3rd of July we had sex, within 5 hours of sex my girlfriend took i-pill, then on 9th of July she got her withdrawal bleeding, it was very slight continued for 1 and half days, after that on 6th of August she got her periods which continued for 3-4 days, and then on 26th August we make out via oral sex and fingering, but sexual intercourse has not occurred, in no way the penis was inserted into the vagina, and whenever the sperm has been discharged by normal masturbating, each time it was being washed with water. Not only the penny even the fingers also. But after that fingering is done as well as oral sex but every time when sperm is discharged via masturbation it was washed by water. The next period date was on 3rd of September, as she had generally a cycle of 28 days. But today is 4th of September and still she has not got her periods. Is there any chance of getting pregnant?