UTi, should I refill my Ciprofloxacin?

Okay I thought I'd ask here:
So I've have a UTi and i was prescribed 5 days worth of Cipro..
I felt like the medication made it better.. but always had a slight pain at the end of my pee stream.. and it JUST TODAY (the last day of my prescription) I stopped feeling any symptoms..  
Should I refill my ciprofloxacin just to be safe? Or do you think this last day is enough for my infection to clear up? 

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