Preclampsia! What can I do to make sure I have a healthy baby!?

ok- i had a 24 week prenatal visit today- I gained 13 pounds in 4 weeks! and i watch what I eat- no fast food very little junk food. then they take my blood pressure with the automatic machine 168 / 86, I have never had my blood pressure that high! usually 115 / 65 give or take ( we have a blood pressure cuff at home and I will check it occasionally). when my dr. came in he checked my BP again with the manual stethescope and said it was lower about 140/80 but that was still too high too. The Dr. did not tell me if there was too much protein in my urine but they ordered a 24 hour urinalysis where I have to carry a jug around with me for 24 hours to collect my urine so they can test it. He told me to take it easy and stay away from salt and that he wanted to see me in 2 weeks. Did anyone else have these symptoms that turned into preclampsia? Hypertension? I will know more i guess after they test my urine but I am currous and a little worried, It is too early for my blood pressure to shoot up that high. any personal accounts of what you went through might just be helpful for me as I am laying on the couch- hopefully the more i rest now the less I will HAVE to later - I can not stand the thought of bed rest but I can handle a few hours off my feet! :) thanks for your answers.