UTI?? STD?? PREGNANT?? IDK

ok so i’m not on BC but every time i have sex the boy pulls out and i’ve had a lot of sex this summer. i’m supposed to get my period today or tomorrow but i’m panicking bc my pee is burning and my stomachs been feeling really wack AND my discharge is white and thick/chunky ian and i’m constantly hungry. could i be pregnant i’m so scared and 17