Had pre-eclampsia in both my pregnancies very mildly. Developed around 34 weeks, but I missed the midwife check that would have picked it up with my first. It was picked up instead at the 36 week appointment. With my second, an admin screwup meant I was put in the low risk pile for follow up, so it wasn't acted on until 36 weeks.
I was swollen with my first, but it was hot and I swell in the heat even when not pregnant. I had no other signs or symptoms other than BP, proteinuria, and some wonky liver enzyme blood test results.
Once picked up, I was admitted to hospital, and placed on twice daily labetalol, had 4 hourly BP checks day and night. CTG monitoring every morning and Doppler checks at shift change. Induction at 37 weeks. Babies born healthy (albeit with mild jaundice) and well. Post birth I was kept in for two nights for baby to have blood sugar checks (due to the labetalol) and to make sure my BP didn't suddenly whizz off in new and exciting directions. I remained on labetalol for a few weeks post birth with my first, and didn't need them at all with my second.
My second baby was also breech. I wanted to attempt an ECV, and was booked to have one at 37+2 (booking made before official pre-eclampsia diagnosis). But the doctors were umming and ahhing if I should be allowed to have one. Luckily baby decided to turn before the final decision was made at 36+5, though I think the senior doctor (literally wrote the NICE guidelines on ECV) would have allowed it. I still wound up with a C-section (little blighter got stuck in labour), but recovery was easier than anticipated, so it wasn't all bad.
Hopefully it isn't, but if it is, don't fret, you will be so well cared for.