Are you seeing an MFM this pregnancy? I always feel a little better when the MFMs are relaxed.
In your shoes I'd talk to your doc about their criteria to call them (bp #s, symptoms, etc) and when to go directly to L&D - remind them of your low baseline.
As always, watch all your signs and symptoms http://www.preeclampsia.org/health-info ... d-symptoms
and especially watch for headache that doesn't go away with tylenol, URQ pain, visual disturbances, and decreased baby movement.
These subsequent pregnancies are nail-biters, sometimes I wish we could just spend our whole pregnancies in the hospital!