Period Question

So my period is due soon and I've had two days (20th October) and today (4th November), where I've had light and I mean very light pink within my CM, but only when I wipe. Today I did have a very thin line of bright red blood but it hasn't come back. Also, the pink tint to my CM has gone. I'm feeling a little dry but obviously still secreting CM (as I said, more noticeable when I wipe).  I'm getting slight cramping today but nothing that has had an effect on my day to day activity. Could I see my period in the next couple of days possibly? Does anyone else experience/has experienced this? Also for your info, I am not pregnant so impossible for it to be implantation bleeding.