if you are going to take plan b you should take it today dont wait any longer, because you have a 72 hour window...talk to your pharmacist, because you have been on the pill prior to... don't be shy that's what they are there for.... the longer you wait the more your chances are of getting pregnant. Please don't have unprotected sex, you are more likely to get stds and become pregnant without the use of protection, and not just birth control...
ps. you probably threw up from all the hormones you ingested with taking triple the amount of BC. like plan b would make you throw up in the first hour if you're not used to that much hormone...