Welcome to HealthcareMagic.
If you are sure that you have vomited the pills , you need to take them again.Before you take your emergency pill , make a decision whether you need it by calculating your safe period and chances of pregnancy
.And you should be taking Levonorgesterol alone but not a combination.
Once taken , it take s around 1 - 4 hours for the drug to reach peak levels.
I advise you to consider the risk of pregnancy and then have the drug agai as you vomited.For better advice or more information , add any questions as comments here or feel free to mail me.