Miscarriage options

Hello! I’ve blighted ovum and am in the midst to decide if I want to choose to miscarry naturally or via surgery (D&C). Suppose to be 9.5 weeks according to LMP but from ultrasound, the preg still stagnant at 5.5 weeks no progression. Would like to get opinions from people who have had went through the experience. Thank you! Also, how long does it take for the next menses to start? #pleasehelp #miscarriage #firsttrimester