one week late yet no signs of pregnancy at all!

hi im 18 and me and my boyfriend had sex about 4 or 5 weeks ago. i was supposed to get my period about a week ago and im really nervous i might be pregnant. but i have looked up very early signs for pregnancy and foudn that i have non of them. also my period is usually a little irregular so im not sure if i should really worry or not. i have been very irritable for about 2 days and im hoping that is just PMS starting up! what do you think?? thanks

You should for sure by a pregnancy test

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