Cycle

So I had a missed miscarriage on 2/9 took cytoc I think it's called. Miscarraige started on 2/11 and bleeded stopped in 2/11. Well today 3/4 I started having some slight, weird cramps. Is this normal? Could it be AF coming? I am just confused I read lots of stuff and most people get AF 4-6 weeks later! Any help would be appreciated!!