Incomplete or retained bits of placenta can only be removed by surgical procedure (D & E) in case of above medication fail to evacuate.
Therefore, you need to consult with your gynecologist to proceed the D & E (Dilatation & Evacuation).
You can plan for next pregnancy
1-2 months after regular period and must follow precautionary measures to avoid preterm delivery or miscarriage
. Taking vitamin E
& folic acid
is quite helpful for 3 months of pre & post conception period.
Be well & take care.