please help with these questions 🥺

so new year’s <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> i had sex and he finished in a condom. without a break we took that condom off and he wiped himself with a dry towel and we put a new one on and went again. i kinda got worried about it getting on the new condom so i took plan b yesterday and in less than 24hrs (the first of january)

1. my period is supposed to be in 4 days from now. because of the pill can i miss my period completely ?

2. how late missing a period is too late in this circumstance ?

3. do i have anything to worry about