Implantation bleeding?

Ok ladies I am 10dpo and spotting light pink and my breast are itchy not sore but itchy! My period is suppose to start on Dec 25, I am very regular. I had a miscarriage Sept 26 and my periods came right back. I didn't have implantation bleeding with that pregnancy but did with my two kids. What do y'all think? Of course I will test Thursday or Friday just curious now what this might be!?!?  Thanks ladies!