Spotting

This will be my first period since being off BC, though I was very regular before BC I am not sure what it will be like now. I am currently 11 dpo and around 9 dpo I had mild cramps and back pain and twice their was very faint pink when I wiped. Since then the cramps have still been mild and on and off but no more pink until today. It is still pink but also a slight brown mixed in. I have only seen it once today and it was a very small amount but I was obviously hoping for the pink on 9 dpo to be implantation but I'm thinking now it is just AF showing up very slowly. What do you ladies think? Has anyone had a similar experience but was in fact pregnant? Thank you for your advice!😊💕