Can a vaginal yeast infection cause frequent urination and other uti symptoms?? If yes, how to treat?

Yeast? UTI? STD? Yeast might do this, but as you suggest yourself, it sounds more like a UTI. STDs like gonorrhea, chlamydia also can cause similar symptoms, and it can be difficult to distinguish all these from one another. Professional evaluation is needed. Consider your nearest government funded sexual health centre. Australia's SHCs are the best genital medicine clinics in the world. You'll get great care.