Thanks for posting your query.
Normal menstrual bleeding and abnormal bleeding due to other causes should be differentiated. Make sure you have been treated for retained products, as it may cause postpartal bleeding and increases risk of infections. If D&E was performed for retained products then it may cause vaginal bleeding later. Avoid carrying heavy weight and extra physical activities till your get completely well.
Visit your doctor for physical examination and ultrasound
may be needed.
Hope it helps.