UTI and Trichomoniasis. Non sexually?

I am suffering from UTI and Vaginal infection from last 1.5 month! I have received different antibiotics during that period! But UTI is not going away! Now I am receiving amikacin injections with some other antibiotics according to my urine culture report! In my current report there was Trichomonas++ which wasn't there in my earlier reports! My Doctor is giving me Candiforce 200 and Candid CL Vaginal Gel for it! Is that the right antibiotic for Trichomoniasis? And how did I get Trichomoniasis? Can it be transmitted non sexually? Because my partner is not infected he had got himself tested! Please help I am really worried! Will it go away by Candiforce and Candid CL gel or do I need to take some other antibiotics!