So confused!

So according to this app I am 11dpo today and according to my other app I'm 14dpo. I had an extremely faint positive 2 days ago 9-12 dpo and another extremely fait one yesterday 10-13 dpo then this morning woke up with brown spotting but only when I wiped and haven't had anything since. Is this implantation or is AF going to show her ugly face. AF is due tomorrow