Hcg low

Lacie • Married, 10 month old and pregnant with twins!
I have had 5 miscarriages, found out I was pregnant on Monday! Called my wonderful obgyn, sent me for labs on Tuesday! We were checking hcg and progesterone! My hcg was 35 and progesterone 10! 
I have been though low hcg with my last pregnancy 1st labs 66 and second was 130 which we thought I was good, until a week later I started bleeding!! 
I went for more labs today and hopefully doubled if so then I am being prescribed progesterone! 
I am trying not to worry but that's extremely hard! I just want my baby to make it! I don't know how I can keep trying if this pregnancy doesn't make it! 
Anybody have any stories with progesterone?