The SMFM website is a good resource (just FYI, we are not allowed to name/recommend specific doctors on the forum).
Does your OB have someone s/he consults with? That might be a good start because that would be who you would deal with if problems arose in a subsequent pregnancy.
I would personally be fine traveling for a one-off consult, but the possibility of continuing care would factor into my decision.
Lovenox is normally prescribed for women with underlying clotting disorders. It doesn't prevent preeclampsia/HELLP as such (which is why it's not used on everyone) but on women who have specific issues.
I am a chronic hypertensive and my MFM pre-conception consult was basically "Stay on your meds, yes, those are fine; nothing else to do, we won't see you if you don't develop problems." BUT, I had a known risk factor, no sign of anything else, and the treatment for what I have is known, so my experience is not really applicable to you. If you have not been tested for underlying issues, then an MFM would be the person to see.
Aliza - 01/05/2007 - Severe preeclampsia, emergency CS 37 weeks
Isaac - 09/26/2011 - controlled on 150mg Toprol, NO PE, 39 weeks!