Hello and welcome.
I am sorry you are looking at developing PE. As you already suspect nobody can tell for sure how long it will be till delivery. For some of us it took only hours before delivery was imminent, and some can limp along for weeks. For me it took both times 2 weeks from diagnosis to delivery.
I am glad your doctor is very careful and also wants you to stop working and is planning to see you more often.
Here is a list of symptoms. If you experience any of them, please immediately report to your doctor: https://www.preeclampsia.org/signs-and-symptoms
Also feeling just off can indicate something is going on, so please trust your gut feeling and report anything to your doctor and nurses.
If you have any more questions, let us know. We are here to help as much as we can.
Sending you hugs and hopefully many more weeks of pregnancy.
MC 3/2009 and 3/2011H
(1/1/2010-1/7/2010) - forever loved and missed; severe PE with Hellp; partial placental abruption, classical c-section at 25.6 weeksM
(Nov. 2012, born at 35.4 weeks) - severe PE
Our pain has been put into words, placed into empty cradles, to remember that all our babies lived, that they mattered and always will. - Field of Cradles http://www.fieldofcradles.org/