I have done sex with my girl friend on 25th July, 7 days ago.during doing sex condom was burst.I'm 90% confirm that sperm was not passed in the vagina.but my girlfriend have a misunderstanding that she is pregnant.I have already given a pill unwanted-72on that day.but from tomorrow she had some bleeding before 11 days of the period time. I can't understand what is this .I got just pressurised about what is happening.please send me best advice.

The ONLY 100% effective way to prevent pregnancy is to keep your penis away from her vagina. Any time you have penile insertion you risk pregnancy.

And the time to ask this question was BEFORE you engaged in sexual intercourse. Now you have to wait until a week or two after her period is due. If she gets it, then you are good, Otherwise she will have to take a test to see. If she is stressing this could cause her to miss her period.