It won't stop!

I am pretty frustrated. Last month my period was a week late, it came fiercely and then stopped being a full on period after a week but I have now had dark brown discharge for three weeks. I am sick of having to tell me husband why we can't have sex. Idk what is going on. My doctor said it sounds like I could have had an early miscarriage. Does anyone know any natural ways of stopping the bleeding?