AF was due on Friday

Totally new here so not sure this is the group to post in...but AF was due Friday...I  am usually like clock work... I have tested everyday since last Wed each one BFN.  Had a really weird discharge yesterday, looked like brown mucus, and it was only a small amount.  Last night and this morning a little bit of pink on tp after using bathroom but that's it...at this point I don't know what to think.  Has anyone else had a month like this?  If so what was the result prego or no?