Hey there.. Well you could get pregnant there's a chance... But it's too early for symptoms.. Also, if you just had sex yesterday, then you can get the morning after pill if you are really worried.. You can get it 72 hrs after you have sex..
I'd say wait and see if your period is late and then take a home pregnancy test.. And also, try not to stress too much because that can make your period later.
Goodluck, and if u ever need anything you can pm me, im michelle 15 years old and 14 weeks preggo with my first baby