Here is a recent thread on the high pulse issue: http://www.preeclampsia.org/forum/viewtopic.php?t=17482&SearchTerms=+racing+pulse
Like Joy, I was also diagnosed with high cardiac output during my 2nd pregnancy and my doctor wanted to keep my pulse nice and low - 70s & 80s.
If your OB isn't aware of your racing pulse, please let him/her know first thing in the morning. Also, it sounds as though your blood pressure is quite labile, fluctuating in and out of the hypertensive range, and that is something we often see with preeclampsia - readings tend to jump around quite a bit before the become, and stay, high. And even rare spikes into the high pressures you've mentioned can be very dangerous to both you and baby. So please, continue to keep a very close eye on those pressures and your symptoms. I would also speak with your doctor regarding their thoughts on blood pressure medication.
Are you seeing a high-risk OB? If not, I would really urge you to get in with one immediately. Your pregnancy requires very close monitoring and I am surprised that your OB is only seeing you every two weeks.
Please do take care, keep close watch over your symptoms and don't heistate to head to L&D should things progress. Let us know what you find out from your las tomorrow.