Implantation bleeding ?

Hello , I have been trying to conceive for 8 months now and I'm hoping for good news ... I'm 11 dpo and af is due on 12/4 . I took a test and thought I seen a faint line , the next day's retested I didn't see anything. I had a pinkish discharge  this morning . I don't think it's af glow has been pretty much on point for when af comes it has only ever been off by a day . I was wondering if anyone thought this might be implantation bleeding ? Or do you think I should just rule out pregnancy for this month ? Thanks for advice