Someone please give me advice :(

So me and my boyfriend had sex about a week ago unprotected they say pre cum can’t get you prego but I still sucked anything off the tip before hand sorry if that’s tmi but anyways we did it and he came but pulled out and he says he’s positive he didn’t cum inside but I’m a scardey cat and Im scared even tho my period isn’t supposed to get here until like 2 weeks ish but I’m having cramps and it’s scaring me a lot I’m young I know I’m stupid for getting myself into this but I trust my boyfriend and we always use protection just this time I don’t know what got into us🤦🏻‍♀️ am i over exaggerating? My risk of pregnancy that day was 11%