bleeding and back pain after taking i pill single tablet.

[joextrm]

me and my partner masturbated each other on 25th september (just 2 days after census). we were not sure of the semen presence in hand while masturbating. next day she took an i pill for sefety. after 7 days she started bleeding and have back pain. Is this a sign of pregnancy? she is 24 years old. please reply.her last menstruation started on 18th september and ended on 23rd september 

[ppowb]

Sex on cycle  day 7 is not high risk for pregnancy. On average ovulation is on cycle day 14 and sperm only lasts for 5 days inside. It does not sound like fresh semen got in her vagina. I think you are safe. The bleed 7 days after taking emergency contraception in the first half of the cycle is normal and indicates the EC did its job. This bleed probably starts a new month, so do not get upset if her period does not show at the normal time. The back pain is probably due to the hormones in the pill.

I hope you are discussing proper means of contraception before engaging in greater intimacy.