Please help, i am so scared. i think i have oral cancer?

hi. im 16 and i think i have oral cancer. i am so scared right now and just feel like puking because i'm so worried....whenever i swallow it kinda hurts where my right tonsil is. around the side but not my throat...and it doesn't hurt on the left side. it's been like this for around 5 days and it isn't going away and i'm so SCARED!!!!!!!!!!!!!! please tell me what this could be, i just feel generally unwell like i have a serious illness. i do smoke so i am very paranoid!!!!!!!!!!!!! just tell me straight up...does it sound like cancer?? i'm not spitting up blood but my mucus is white? what does that mean?