Is uwanted72 working or not? Confused!

Me and my partner had intercourse on the 8rth day after my periods over while which the condom get torn off so after 6 hrs i took unwanted 72 pill *but i don't feel any side-effect or vomiting now 25hrs has been passed from the time i had taken the pill, *is there any way to find out whether the pill is working or not? Because i am not facing any bleeding or side-effect like problems. * Is it important that bleeding should necessarily take place after having pill?  *My BMI is 19, i am also eating elaichi so much after having pill to avoid vomiting. *Do i need to be worried about it and is there any way or symptoms to find out whether pill is working or not? (ITS VERY IMP. PLEASE MAKE SURE TO DO REPLY FOR THIS QUESTION to suggest some way to find whether pill is working or not?) *And how much time does the pill take to  work, Please reply the above mentioned concerns asap it is causing so much of tension.