Our first pregnancy and our first miscarriage...

Jennifer • Our little angel Baby Rivas
Tomorrow I'm having a D&C procedure done. My doctor is such a great doctor and did not give up on our baby until he knew for sure that I was having a miscarriage. I was suppose to be 10 weeks by now and our baby was only measuring at 6 weeks. Just a yolk sac. No heartbeat, no growth the past 2 1/2 weeks. Words can not describe how it feels not to be able to carry our little love in my belly. I feel so empty and scared. My belly has gone done while I cramp and bleed waiting for this procedure.  💔
All I can think of is "what if?" or "what could we of done to avoid this?" 
After I picked up my 5 different medications today for this procedure, I'm surrounded by pregnant women with their beautiful bellies. I couldn't help it, my eyes started watering and I felt like crying my eyes out. We want to try again eventually. I'm so terrified of going through this again. I never imagined my first pregnancy being the most devastating experience. 😞 
Does anyone have advice on how they stayed positive during their miscarriage?