Preeclampsia help please??

Who's had it, and what was your experience? What were your symptoms in the very beginning, did you do any proactive monitoring, what was your outcome?

I'm 22+5 now FTM. A week ago, I had some rather significant "flashers/floaters" and some lightheadedness that went away after laying down. My BP has always been flawless, I had eaten recently, and wasn't doing anything too strenuous. Fortunately, I got to see my doc 2 days later (I live in Nashville but my doc is in Atlanta where I plan to give birth), and everything tested just fine, but she told me to let her know if it happened again.

I have read it can come on FAST, with no prior warning signs, so I decided to be proactive - I bought a really good home blood pressure cuff, a fetal doppler to hear baby's heart, and some urine test strips that test for protein in the urine, and plan to make those part of my morning (or evening) routine. Anyone ever done that? What were your results? Did you catch anything early? Did it provide peace of mind? Thanks!