Question.. Tmi

JustJosie
So I was 4 days late for my period. I light bled and spotted for 4 days... Now my cervix is long... Like is normally 1cm and is now close to 3cm. I have never in over a year of tracking had this happen. Has anyone else and not been pregnant or do I need to test in a few weeks was it implantation??? Any ideas at all...