Possible spotting/implantation bleeding?

KDixon 💙👼💙👼

Hey everyone! I am currently 12ish days DPO. Aunt Flo is expected to arrive in 3 days.. this morning I had brown spotting about the size of a quarter. Breasts very swollen, negative test yesterday and today. Could I be experiencing implantation bleeding/cramping this late in the cycle? Any insight would be super helpful. This is all new to me and just want to understand what’s happening ❤️