help/advice please

okay soo i meet up with a friend on friday you know he got all touchy and everything well he ended up being me home and he kissed me well i expected it tbh cause of all the touching so i was happy! well today saturday whatever lol he asked if i wanted to go over to house so i said sure we hung out watched a movie and after the movie he undressed me and he went down on me and WOAHHHH it was AMAZING!!! like that shit made me feel good!! and then he comes up and pounds me soo hard he left me speechless!! then asks if i’m on birth control so i said no cause i’m not.. and he said okay water or juice i said water cause i figured well i’m pretty hot water can help well he came back with water and hands me this pill with it and i asked what it was he said plan b cause he nutted in me. well my first thought was why do you have plan b like that for like huh??? but i didnt ask. but like should i be concerned about why he has plan b like that??? and should i be worried if i do end up pregnant like how long do i give myself?? and also cause if i do then i have to tell my good friend because he’s the family friend and to top it off i know age is just a number but he’s 32 and 22 i shouldnt let the age get to me but dam he knew his way around 😍😍