Brown Spotting 1 Month After D&C

I sadly lost my pregnancy at 11 weeks. The baby had stopped growing at 7 weeks. Had a D&C on Jan 17th 2019. I had my first period on the 13th of Feb and it lasted 4 days.

Today I had noticed brown spotting when I whipped.

Is this normal after having this type of procedure or could some miracle be happening and it be implantation bleeding?