Implantation bleeding?

Erica
This morning when I went to the bathroom there was a small amount of orange-ish blood when I wiped.. I'm on CD38 16 DPO and last month that's when I had my period.. So I thought that's what it was, put in a tampon..
Later on, I went to the restroom and went to change my tampon and it was pretty much dry, so I didn't put another one in. 
I went to check just now and now I have cervical mucus that's watery.. And no blood.
Any one have a clue what's going on?!