Still spotting brown then when I wipe it's light brown, barely there. I took a pregnancy test on dec 17th and it was - should I take another one now?

What I would recommend is that you wait another week and then test using first morning urine. If that is still negative it's best to wait to see if your next period comes as expected.

Even the most regular of women have an "off" period once in a while. With the stress and fun of the holidays, it's not unusual for a period to be out of whack by a few days.