help!!!! on and off spotting varying in colour

Jade
So my periods not due for another 6 days, but for the last two days I've been spotting I guess? 3 days ago my discharge was dark brown like dark dark brown! Then the next day gone? Me and my SO decided to enjoy the alone time we finally have after realise I'm bleeding again but it's old blood? Through out the day I would get a couple drops of brownie blood but then Later on that evening there was no blood what so ever on my tampon. Woke up this morning went toilet and wipped to then notice that I was still spotting but instead of dark old blood it looked light pink! So put a tampon in as I thought if this is my period don't want to be walking around working without a tampon. On my lunch break went to change yet there was hardly anything on it and back to dark brown old blood? Got home chilling out gone to the toilet wipped...bright red blood again. I can't work out if this is my period coming early or implantation bleeding 😞