What Causes Itchiness , Burning Sensation And Yellow Discharge From The Vagina?

I have had itching, burning, and yellowish discharge coming from my vagina for the past week. I havent had sex in over 3 months and just yesterday I started taking 500mg of amoxicillin 3x a day for a urinary tract infection. Do you think that I could have Bacterial Vaginosis and a yeast infection at the same time?