pink spotting

brilli

I have been on BC for almost 2 months now ,done w the spotting and all . I have been very active sexually this past few days and on the 23rd I had backdoor sex (sorry TMI 😂🤦🏼) and my bf said that I leaked every where and even got inside me and now I just saw some pink when I wiped I am on on CD 11 and I ovulate on CD 13 . I took an opk yesterday and it was negative but getting tobbe a positive so its the pink related to soon ovulation ??