Headaches and spotting

Ashley • Been with my husband 12 years, but married Aug. 2015 :: we have two daughters 💗💗 :: TTC #3
For the past 3 days (not including today) Ive had spotting of light pinkish/brown on and off, I've also had a slight headache on and off. AF isn't due til jan 10th but I took a hpt today and it was negative, too early to test? What's going on? Also my cervix has been high not low like it is when AF is suppose to arrive.