cocktail party garment suitable for ladies

A UTI is no fun thing!. I was tested on 8/3/ 17 and took 10 day of 250 mg of antibiotics the rechecked and it was still there..took 10 days of 800 mg antibiotics,, checked again said gone but its NOT! Water and AZO and cranberry juice has been my friends for a week now . I am about ready to scream. !$$$$$$$. This is a first for me ever too. Grrrrrrrrrrr. Any suggestions ? cocktail party garment suitable for ladies