Am I pregnant TMI sorry.

So I'm not trying to get pregnant or anything but I just got over my period on Thursday my partner and I have unprotected sex as I have the implementation in my arm. We had sex on Thursday since my period was gone and twice on Sunday. Today (Tuesday) I have very light pink spotting. The last time we had sex before I got my period was the day before. Which was also a Thursday then I got my period on the Friday night. I'm scared I'm pregnant as I have read that light pink spotting could be implantation of the egg. I need advise! Please.