i think i'm overthinking it

hi! so me and my boyfriend had unprotected sex which was a stupid idea but it was on the second day of my fertility window (March 18th) so my chances were higher. anyways before we started having sex i gave him oral and he cummed in my mouth and he can't cum twice it's hard for him😂 but then we cleaned his dick and started fucking. he didn't cum in me or anything and my period is coming in the next week ( it's supposed to start on the 3rd of April or so) but i've been so stressed about being pregnant. the only pregnancy symptoms i've had is fatigue (i've been constantly staying up until 10am so i understand where the fatigue come in) cramps (which can link to my period coming up). that's pretty much it but last night i was stressing out to the max and was horrified i was pregnant, my stomach started hurting very bad and i started getting nauseous but that tends to happen when i'm stressed or scared. all the stores around me are closed so i couldn't go get a pregnancy test so i did a sugar one that i saw off youtube and it turned up negative. i am pretty sure i'm not pregnant but i don't know how to stop stressing. my mom don't know i'm sexually active so i can't talk to her about it but i just need some help. also any tips on trying to make your period to come sooner or to stop stressing so it doesn't delay? i'm very scared and just need some help.