Help?

So I had a miscarriage in December. Had a weird “period” just 3 weeks ago. It was spotting, light pink, and brown. With no clots for 3 days (I figured okay my body is still trying to figure stuff out) well this week I’ve been feeling off. Just super nauseous, i can’t eat, I’m cramping, I feel awful but not sick awful. Idk how to explain it. Has anyone felt like this after a miscarriage before?