Ovulation, implantation or UTI?

My cycle is always regular, average 28 days. Last cycle 9/24 and ovulation around 10/7. 
Sunday/Monday I had some white discharge again a little a few days prior which I thought was normal for ovulation.  
2 days ago I started Urinating a little more often from what felt like irritation and super mild cramps.  Yesterday I had a tiny pink spot didn't think much of it. Today I had first thing in the morning a medium amount of pink on TP which is weird to me because I never see any blood in between periods. The sensation to urinate has deceased and doesn't bother me anymore. 
Had sex on 10/7 with pullout method. 
So ovulation, implantation, or start of a UTI? 
Any advice please!