3 m/c's and no kids!!

I had a m/c in 2002 with my 1st pregnancy with my late husband,did not know I was pregnant until I had the m/c then I found out Feb.2003 that I was pregnant again but 2 day's later I started bleeding and cramping extremely bad and had a m/c on Valentine's Day. I have remarried since my late husband passed and after 4 year's my DH and I found out we were pregnant again,so happy and praying for a baby,I went to my dr. appt. for a normal checkup and they done and u/s and there was no heartbeat...I was crushed,many emotions going through me.I let the m/c happen naturally and I bled for 98 day's!!!! During this time I lost my Grandmother and my uncle. Was depressed I didn't want to get out of the house. I felt like a failure to myself,my babies and my husband. I felt as if I was going through this all alone,even though I have a great family,no one could relate to what I was going through. I am a type 1 diabetic so the doctor's always say they figure that is why I keep miscarrying. I am praying so very hard. I have no children of my own,my husband has children from previous marriage. I want so bad to be a Mommy!!! People just don't understand the heartbreak and all the emotions when you m/c if they have not been through this. May God bless each of us with a baby and baby dust to each of you that have m/c and still trying. I do use the monthycycle chart but my periods are 24-33 day's,normal is 33...I try not to think too much on it and let it happen on it's own but when you want something so bad it is hard not to think about it. I would love to get pregnant again but I also have a fear that it will only end in m/c again.