Sorry you're going through this. I had it happen with my first, and it led to induction. (An induction I continually have to defend in some circles as being medically necessary!)
There is a very good discussion of it on the Mothering.com message boards:
http://www.mothering.com/discussions...d.php?t=221654
The thread
is a bit alarmist. Preeclampsia can be dangerous, but you will be closely monitored from here on out, and to my knowledge the vast majority of the cases are mild. The thing to remember is, there is absolutely nothing you could have done to prevent it, so don't let anyone try to make you feel guilty!
Since you may need an induction, I'd encourage you to a) research induction methods and b) talk to your doctor about what methods the hospital tends to use. I'll hit on my bogeyman again--Cytotec/Misoprostol. Some hospitals are fond of it because the cervix doesn't need to be ripe for this form of induction, but the medicine itself carries a label warning against its use in pregnant women, the manufacturer has long warned against using it as a method of induction, and it now carries an FDA warning against its use:
FDA Warning
Drug label (PDF)
Patient information sheet (PDF)
Sorry to sound alarmist, but there are literally lawyers out there making a living off Cytotec cases. You'd be better off with a c-section than being induced in this manner (though I wouldn't recommend going straight to that route).
My experience with it...Pre-E was diagnosed through high blood pressure readings.
Consistently high blood pressure readings. I was sent to labor & delivery to be monitored and have blood drawn for that form of testing. Sadly, I wasn't given a single bit of helpful information on how to cope or prevent its escalation beyond "don't eat high-sodium foods," which I didn't do to begin with! There are, apparently, drugs that can help treat it. Pester your doctor with questions.
I was induced a day after my due date, a few days after going to labor and delivery with headaches that were affecting my vision, which is apparently a big danger sign. I had to be on magnesium sulfate for 24 hours after the birth of my daughter, and that is one nasty drug to be on. It is an anticonvulsive.
Here's a fact sheet on magnesium sulfate:
http://www.twinslist.org/magsulfate.html
Again, no clue if it will be used on you. Hopefully, with careful monitoring, you can make it through the last two months alright.

Do what you can, and don't feel guilty for what you can't.