OP you really must stay in hospital. Protein in wee is significant, I don't mean to scare you here but it's a sign the P/E is affecting how your body is working. If the P/E persists your liver and kidneys can begin to fail, you can progress to a condition called eclampsia, end up having seizures and potentially die. That's how serious it is.
Modern medicine now means they can prevent your condition progressing to eclampsia long before it gets to that stage but it's vital you comply and do what the experts tell you.
There is a lot of waiting with P/E (I was in a week with my daughter until I was induced a month early) - I do remember crying as they wouldn't tell me anything. It was because they don't know what conditions of P/E have potential to progress to eclampsia, so its very watch and wait and trying different drugs and dosages. You can't just take a few labetalol and you're cured, the only cure for P/E is delivery of your baby. As you are still relatively early in the third trimester it's even more vital they treat you and get that BP down to keep baby inside you long enough until it's the safest possible time for them to be born.
I was also told after I had my baby I wasn't told how serious my condition was as they didn't want to panic me and send my BP up.
Take the labetalol, if you mess around not taking it you are to be blunt playing with both yours and your baby's life. If you don't need it or the dose is too high they'll know as your BP will go too low, if that happens then they'll adjust it. But you must take it. It can also make you ill if you abruptly stop and start it. It's a medication that once you take it you need to reduce gradually.
With P/E you can also seem fine one minute and be severely ill the next, I know as it happened to me.
Can you have a chat with the midwife? I remember pouring my heart out to mine at 3am about how scared I was, she was lovely and had seen many women in my position. Press the buzzer and call her over for a chat,
Also when the consultant comes explain how not knowing is stressing you out and get them to go through your admission notes with you and ask them what their plan is.
Trust me I know how horrible it is but you need to put your baby first and let the consultants do their job and look after you both. When your baby is in your arms you'll barely even think of this, and it'll all be worth it, I promise xxx