Plan b one step question

Breeann

Hey guys I need some of yalls answers. Me and my boyfriend had sex unprotected 2 hours ago... and he accidentally came inside me... I don’t take birth Control but I don’t know if plan b one step could help prevent pregnancy and I’m ovulating today. Will the plan b one step work?

Ps on <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> it says my fertile window ends in 2 days