Period talk- TMI

So I have been off of birth control since February and I havent had a period since then. I've been to the doctor and just got blood work on Thursday to test for PCOS and I am waiting for the results on that. Yesterday I used the restroom and when I wiped there was a streak of blood, however after that one wipe, there has been no other sight of blood. I've never had that happen before so I'm a bit confused as to whether or not that could count as a period or if there is something else going on?