Possible implantation bleeding

So, I'm not sure if anyone could answer this but currently I'm 6 days late and this afternoon I started lightly spotting. Light pink with some brown...sorry for the tmi. My fiance and I have been ttc for 6 months. We had a miscarriage 5 months ago which broke my heart since I have had numerous miscarriages previously. Could it be implantation bleeding or the start of my period?