UTI and spotting

Cycle = 32days

Ovulated = 10/11/14

I started spotting pink mixed with cm 2dpo, that's also when I felt the start of a UTI. I went in to the dr. At 3dpo and they took a blood test to see if I was pregnant, which came back neg, and was obviously to early to tell. Long story short I've been spotting every day since 3dpo. It's only been light colored either pink or brown and mixed with cm. Can a UTI make you spot? And does it decrease my chances of implanting which would be around today or tomorrow. Any input is appreciated!