My Cycles can be 38-42 days. I've been off the pill for a year.

My last period was 8th Feb. On CD 27 I started to get Brown discharge, I've had this for 3 days now, but its got paler in colour like the photo shows. It's not got heavier, if anything there's its got less. I've never had anything like this. And I wasn't expecting my period for a little while. I've not got any cramps or sore boobs like I do before my period either. Its very strange. My only explanation is implantation?? I'm praying I'm right 🙏🙏🙏