Question

Alisha • .
Ok. I have been checkin my cm for few weeks now. It hasn't changed much. Went from a creamy white to a sticky thick white. Well tonight I check it and it's kinda brown. Af not due til 18th. So could this be a sign of implantation or af? I would say I'm irragular.. oh I did notice my cervix changed from low to high.. and suggestions?