Dnc for FET?

Hi. We’ve had one successful fresh <a href="https://glowing.com/glow-fertility-program">IVF</a> and one failed FeT last month. My dr said I can have a DNC to clean out my uterus and that can help with implantation. I’m very hesitant to have this done for no medical reason even though he thinks it can improve chances for implantation. Has anyone else done this or heard of this? Feeling nervous about it. Thanks.