Anxious, expecting again; High Risk Pregnancy

Kelann - 04:57am Apr 15, 2012 EST

Hi
I am currently 20 weeks pregnant with a little man, we so desperately want to make it! I have previously had 2 preemies, 1 at 35 weeks and 1 at 33 weeks, with both I was in and out of preterm labour from 27 weeks which the doctors stopped using nifedipine and I was given multiple doses of steroids to mature my little ones lungs. My youngest was born at 33 weeks after becoming distressed inutero, I was 8.5 cms dilated by this point, and she also had IUGR.
This time I have been on and off bed rest since 13 weeks, I have a large subchoronic bleed and it has separated my membranes in several places, I just had my 20 week scan (done at 19+4) at this scan our little guy looked perfect, but the fetal medicine specialist has said that I have a 70 percent chance of my waters breaking before 24 weeks and if we make it to 24 weeks each day after that is a bonus, I am on progesterone suppositories and my cervix measured at 3.5 cms, at 19 weeks. And was still closed. I figure this has to be a good sign. I am now on complete bed rest, but am so frightened,
What else can we do to increase this guys chances!