Yes, auto immune and clotting disorders can put you at higher risk, as well as chronic hypertension. Will you be seeing a MFM (high risk doc) as well? If not I would ask for a referral. They'll have a solid idea of what underlying bloodwork to do given your history.
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