YEAST INFECTION OR UTI? help!' URGENT

Shanny
Okay so first Ive been on the depo shot since April. Okay so last night I posted that my vagina was very itchy and people told me it was either yeast or uti, I got scared bc they said that yeast can be cause by pregnancy and I  lately in the morning I've been getting naseuous bc I'm hungry but then I looked that up and it said that it can be cause  y diabetes, so what can it be?!! I'm going to the clinic right now with my mom but I really don't wanna be pregnant,