Congrats to making it to 33 weeks! It's awesome how they are really watching you! You'll be amazed and don't be scared IF you do go early! The NICU SUCKS for you but it's so much better for them! Mine made it to 34.5 weeks and were 3.5lbs and 4.10 lbs
REALLY try not to stress! Stress can adversely affect BP... I was so stressed and upset when I went on hosp bedrest, I literally watched my BP skyrocket to 140/100 on up. Normally it was 90/60. That is what probably caused my abrupted placenta.
You made it to 33 weeks... you should be so proud of yourself! I remember my OB really wanting me to make it to at least 34 weeks, you are almost there. I am sure they will spend minimal time in the NICU. Mine were 31 weekers and spent 26 days there. The time spent is drastically reduced by each day in the womb, as you know.
Hang in there, and you will be so tired of hearing this, but get some rest :)