I’m not on any type of BC and I had unprotected sex last night. He didn’t cum inside me but I’m extremely worried! I don’t have money for plan B, what do I do?!

Update: I got plan B and I’m planning on getting on birth control, I know I know it was dumb of me to willingly have unprotected sex. DEFINITELY wont make that mistake again. Also does anyone know how plan B effects your period?