Headaches and spotting

Ashley • Been with my husband 12 years, but married Aug. 2015 :: we have two daughters 💗💗 :: TTC #3
So three days in a row (not today) I've had a slight headache plus spotting (light pink/brownish) on and off the past 3 days.. My next AF is due January 10th..what's going on? I took a HPT this morning and it was negative. Too early to test?