Im sorry for your loss. Your cycle and body will be abit off after a miscarriage and d&c, its very normal, your hormones are leveling out. Depending on what your hcg level was before the d&c will depend on how long it takes for your cycle to return, the weeks doesnt matter so much. Say your hcg level was 45,000 then it could take a month or more to drop back to 0, if it was only 500 then might only take a week. Bleeding and cramping are normal after a d&c.