I had the exact same problem... OB didn't want to refer me until there was just cause, and Peri didn't want to see me until I was referred by the OB. I figured this would be okay until I started showing signs of PE again.
My BP went up a bit as I was making the transition from the first to the second trimester. I was so freaked out about it, and I didn't think my OB was taking it seriously enough. Basically I asked a million questions, bombarded her with things I had learned on this site, and requested to see a Peri again. She consented. I think she knew I wasn't going to calm down until I got a second opinion. I trust my OB, and I know she has my best interests in mind, but I just needed the extra assurance that everything was fine. So I got the referral and the Peri scheduled an appt for me with no problem. And now the Peri wants to follow me through the remainder of the pg too, which is exactly what I was hoping would happen.
~i~ Aidan Timothy - 4/14/03, pre-e and abruption