IB maybe Early Chemical M idk 9dpo

1/8/18 8 dpo late evening had sharp left lower pain ( O pain) for like a hour off and on next day 1/9/18 abt the same time i have or started spotting light pink kinda redish with a egg white sticky Mucas . but this morning and afternoon had VERY BAD lower back pain almost down to the tail bone . could this be IB or possiable Early MC ? AF due 1/14