On/Off Bleeding

My bf finished in me 5/13 i wasn’t ovulating, i did have a positive opk 5/18 … i had bleeding for a couple days which i am sure is due to ovulation .. bleeding stopped but then came back on 5/22 with dark brown blood with reddish tint .. everytime i pee its brown and red i don’t believe i am pregnant because i have no symptoms and i just think the possibility of getting pregnant was too low from when we did the deed to my positive opk … i did test which may have been early 5/22 and it was negative i don’t want to test due to no symptoms besides usual pms symptoms like tender breast pain .. and AF is due on 5/29 .. has anyone ever experienced this and what was the outcome? Im wondering if this is just a weird period? It doesn’t stop..!

5/18

5/22 pregnancy test

5/27