Implantation? What is going on??

This is my calendar for the month of August. My estimated date of ovulation was Thursday but I wasn’t testing and I think I may have ovulated earlier.. around Monday or Tuesday... Anyways, I just woke up to go to the bathroom and it feels like I have a UTI... however, when I went to wipe there was pinkish blood on the toilet paper and a little bit in the toilet... my periods are all very regular so I definitely don’t think it has anything to do with that but, I just don’t know what this could be... any ideas? Also, what can I do about the UTI?