My expected period (I have irregular cycles) is one week from today. The last 6 days I’ve been spotting. The first two days it was light-medium pink/red. He last four days it’s been brown and mainly when I wipe. Could this be implantation bleeding? If so, how long do I wait to test? I took 2 tests on day 3-4 of spotting and BFN. I haven’t spotted at all today. What do you ladies think?