plz help i’m 13 and have no mom

i’m 13 and don’t really know what to do. my urethra burns when i pee. and it hurts to wipe after i pee and almost feels itchy. i’m on my period and have a tampon in. what is going on? i don’t want to tell my dad about this. that is awkward. i don’t have a mom. what is happening to me. plz help