Five consecutive miscarriages

Hi all, so I’ve had five consecutive miscarriages ( 5/2019, 7/2019, 8/2019, 12/2019, 2/2020) and we have been working with a fertility specialist since October of 2019 but all of our testing has come back normal and we have already tried progesterone suppositories with baby aspirin and prenatals for the last two pregnancies and both times that failed. Has anyone else out there gone through multiple recurrent miscarriages and went on to have a healthy full term pregnancy? And if you did, did you do anything differently to help go full term? I’m just completely at a loss, and am not able to talk with my specialist till mid April but I want to be prepared with possible questions for him. Someone please help 😢