SOS. IM FREAKING OUT AND CLUELESS

hey guys, so I hooked up with this guy from my college the first time we had sex was with a condom but it broke but it was okay because I had an IUD... we had sex for about 2 more times (these times were unprotected) and the LAST time we had sex things got out of hand...

My vag was constantly itchy!!! And I had a horrendous odor.... eventually I go rid of the odor with a baking soda paste and have been cleaning my self everyday with Tea tree oil to calm the itchiness. However, what is it a yeast infection or a bacterial infection?! it's not an STD because we are both clean.

Can I take AZO while I have an IUD? and anyone has tips or similar experiences?! PLEASE I NEED HELP one more week till I go see my gyno.