Firstly I want to send you all my most heartfelt sympathies- you really have been through the mill to put it mildly
I would demand consultant-led antenatal care from as early as possible, as there are things they can do to reduce the chance of PE rearing it's ugly head again. Low dose aspirin (75mg per day) is very often used in women with a history of PE but is ideally started at or before 12 weeks - it should only be prescribed by an obstetric consultant, not a midwife, so you need to be seen by one asap. Can you go to your GP and explain your concerns and ask for urgent referral to an obstetrician who has experience with PE?
Also they should increase your monitoring in your third and possibly second trimester, so that you have regular BP checks and also give you some dipsticks to test your urine for protein at home. They should also consider more scans to check on baby's growth and blood flow through the placenta (doppler scans). If your BP does creep up they can give you drugs to slow or halt the rise and keep everything more manageable.
Did they do any follow-up tests after your hospitalisation? If not hopefully a consultant will test you for blood clotting disorders (thrombophilia etc) and autoimmune disorders which have been shown to increase likelihood of PE. If you come back as positive for any of these they can give you heparin (sometimes known by its brand name of clexane) which thins the blood even more than aspirin and can also help reduce risk of PE in ladies with clotting or autoimmune issues.
Definitely demand the care you need- it helps ease anxiety so much when you have a plan of care that seems good- that will monitor you and also to discuss the "what ifs" so you know what might happen.
There is a slightly higher risk of developing PE than that for the "normal" population because you've had it before but depending on your circumstances this can be quite low still- and if PE does re-occur usually it is milder and later onset.
I had severe PE & HELLP syndrome with my firstborn (at 30wks) and unfortunately did get it again with my second- but not meaning to scare you it was a lot less severe, I was so well looked after throughout my pregnancy- and the PE didn't become full-blown so recovery was swift. But I had great consultant-led care second time round.
Also if you are still traumatised by everything that happened (which would be only natural) you may have a form of post-traumatic stress disorder, and you may find counselling could help...Remember it's not just your body that needs looking after during this pregnancy it's your mind too!
And don't be afraid with any doctors to seek second opinions or ask to be referred to different hospitals if you have any doubts over the quality of care they are offering you. You need to be taken seriously.
I really recommend this PE support forum- great ladies on there- helped me enormously through my second pregnancy:
pesupport.friendhood.net/index.htm
Really hope you get the medical and emotional support you need to relax and enjoy this pregnancy- thinking of you and wishing you bucket loads of good luck xx