I've had stress tests with my first. They just hook your belly up to this little monitor thing that keeps track of baby's heart rate and movement and your contractions. Its nothing intrusive. Mine were normally about 15 minutes at a time. I was induced at 37 weeks due to complications so they wanted to make sure everything was going well.
I've had four stress tests and j have another one tomorrow! I personally don't mind them because you get to hear babies heart beat and stuff :) I am just hoping tomorrow comes quickly so I can hear that everything is okay again
They just monitor with the baby heart rate monitor and contractions monitor...I had one done Wednesday and I have another Monday.