Weird period..

Nicole
So I was supposed to get AF on the 23rd. It was 2 days late and started the 25. Tested and was BFN. I now have what is more spotting than anything. Not needing and femine products. About once a day there is light pink moderate amount on the tp. I normally have a decent flow by the 2nd day. The rest if the time I am having brown discharge (like end of the period). Anyone have any ideas what this is about?