Pregnancy after recurrent miscarriage

Hello all, I just wanted to write and see if any of you had any encouraging stories of having a successful pregnancy after 4 or more miscarriages. I have been feeling really down about it lately and am starting to lose hope that I’m going to be able to have a healthy pregnancy so I’m coming here hoping that you all have some encouraging stories or reasons that you have had recurrent losses. I have a doctors appointment scheduled for 2 months out to start testing but I kind of just want to prepare myself as much as I can for that. Any and all help is truly and dearly appreciated.