Why you double post here and in SGGirls??
anyway... not a good idea at all . See doctor for advice and do it quick!
The action of the DRUG note its not a contraceptive is quite sever on the girl's body and there is always a risk that it will not work! So dont be stupid and hope to use this as the means for birth control.
There are a few types of morning after pills and they work differently. I'm not familar with which is available in singapore but
none of them "Kill the Sperm" as one poster suggested but instead it has got to do with altering the hormones of the girls body to make it difficult for any fertilised egg ie the embryo from successfully attaching itself to the uterus wall. That is one of the reason why its actually very tough on the girl's body bec it alters the hormonal balance and it can take several months and several M cycle for the body to restore the bio clock.
So girls... love yourself and dont let the guy put you in this position where you have to subject your body to this unnatural chemical abuse. Guys.. wake up your F... ideas and dont for one minute think that this is a good way to escape .... you dont feel the pain... if you love her... dont!

Just remember it does not always WORK![/b]