Hi Marybe,
The pill is designed to give you equal levels of protection on all days of your pack. As for taking it late, to quote from this article
Three questions about taking the birth control pill (and plenty of answers) , "A "late" pill varies more in definition among various sources, and to some degree from pill to pill, but with any type of pill, if you have taken a pill more than 12-24 hours late, you may want to consider using a backup method of birth control for the rest of your cycle to play it safe." However, there's also the fact that this was your first active pill of the new pack, so it's really the one setting what time you'll be taking your pill each day.
Given all that, it's unlikely that emergency contraception is needed in this situation. However, if you'd feel safer taking it, it is an option available to you. Are you currently backing up your pill with condoms at all?