Two weeks after miscarriage

Lexii

How exactly do you know when you got your period after a miscarriage ?. I experienced bleeding for a week after a miscarriage then went a week with nothing. Then I started bleeding passed clots all over again I’m confused if my doctor said that I had a complete miscarriage meaning there isn’t any content left. I’m beyond confused and this happening a week after them telling me my hcg doubles from 77 to 199 after I already had the miscarriage.