endometrial biopsy ?

Has anyone ever had this after a miscarriage ? My levels are taking a little while to drop so my doctor said I can either wait it out which can take another month- or she can do an endometrial biopsy to speed up the process as I likely have a tiny bit of retained tissue from my miscarriage. Just wondering if anyone has ever had this? I’m very torn as I would like my body to takes it course, but I’m beginning to get impatient and just want this process over so I can TTC again. 😞 any recommendations or insight is appreciated.