TMI!!! Have very dark brown discharge, AF 4-5 days late

Hi Ladies! AF is 4-5 days late and I've been experiencing on and off, dark brown discharge (below is a picture, warning TMI) for the past 24 hours. It is only there when I wipe and sometimes comes in loads or just very little. I am seriously hoping this is our month and that this is implantation as I've never had this before. There has been no trace of blood in the discharge, just dark brown cm/mucus. has anyone had this and got a BFP?!?! Any advice would be much appreciated! Thanks ladies! sending baby dust!!!💌🤞🤗