Ladies help ASAP😩

Okay so I just had sex with my boyfriend for the first time yesterday morning!! (It’s been 7 months since the last time I’ve had sex ladies I needed it) We didn’t use protection but he pulled out and came on me the first time, second time I gave him head to finish him off. It’s two and a half weeks till I get my period and I’m already paranoid:((( I get like this every time but I’ve never not used a condom until yesterday! I need some reassurance ladies anything is appreciated ❤️❤️ do I get plan b in case or is that overkill?? It’s expensive asf too