Brown discharge

Amber • Mom of 3 boys🧒 Alaina Renee😇 Lucy Annalise🤰🌈

I had a stillbirth a month ago 💔😞. My bleeding stopped a few weeks ago and I already had a check up and I'm already healed. I had sex with my husband a few days ago and I had brown discharge today. Can it already be implantation or maybe residual stuff left over?