Bit of an issues, light bleeding..

Now I was nervous because last month I didn't get a period at all and than month(November) thought I was pregnant, only to see a neagtive, so I waited and finally mother nature decided to show up this month (December)...so okay here's the thing my cycle started on Dec 6th, and it ended on the 9th, it wasn't too bad besides the occasional headaches, and cramps, but like I said it ended, so a few days after even up to now which is the Tuesday 13th, I'm still lighting spotting, but only and I do me only when I wipe it shows faint on the tissue, but nothing in my underwear. Does anyone know what may be going on with my body? Considering the fact I was late for one, then it shows up normal, and now this spotting issuse.. Any answer would help right now if you've ever gone thur it...please and thank you!