Spotting

Jaclyn
I had a miscarriage right before thanksgiving. I had my first period the middle of December and now I'm waiting for my first "normal" period. The last three days I have been spitting a little and cramping like I'm about to start but I haven't started yet. Before I miscarried I never spotted. I took a test yesterday and it was negative. 
Is this normal after a miscarriage? It's like my body is trying extra hard to have a period.