TMI... is this normal???

Julie
Hello ladies.... so this just happened while going to the restroom. AF was due 2 days ago but just had this brown spotting.  And according to my OPK I got a positive 02/27. Took a test CD 9 and was VVFLP then took a test 3 days later and BFN. And now this.... I'm really confused.  Thank you ladies!!! Your help is appreciated!!!