Pregnancy after such a traumatic birth can be very scary. You might ask your team if they can recommend a therapist who specializes in medical trauma, pregnancy and related issues (they exist!) who can help find the strategies right for you to be able to find some measure of peace throughout this pregnancy- which is good for not only you but baby too!
Keep posted as you're able,
2008-Our Baby Girl, PTL born too early at 30w6d, Fought so hard... Forever Loved & Missed
2010- Lil' Bro, Pre-E at 29 weeks... Induced at 36w6d, Born 37w
2012- Lil' Sis, Super-imposed pre-e at 25 weeks, PTL & GD at 35 weeks, Evicted 36w