TMI: Keep having this Brown Discharge

Jessica • 32, married, mother
AF due January 16th, 19th the most, but still no full blown bloody AF. Still have spotting started last Friday 1/20. It started with light brown discharge, then the next day, pinkish discharge in the morning then back to brown. 
Now woke up this morning and again, brown discharge or old blood. I really hope this is a good sign. These pictures are from this morning.  Any ladies out there going through the same thing?