I'm 15 And I Recently Lost My Virginity 2 Weeks

i'm 15 and i recently lost my virginity 2 weeks ago, a week later i woke up one morning and i bled into my pee but i didnt start my period, so then another couple of days later my vagina starting hurting and itching very very badly so i kind of just assumed i had a yeast infection and then 3 days ago i started my period, vagina is still itching and hurting very badly and today i checked my pad and it had dark green spots in one medium sized spot, i want to go to get checked but i dont have health insurance nor does my family have money at the moment, but one thing i do want to know....what is wrong with me???