My blood sugar was running on the low side during my last pregnancy and I was nervous about labor as well. The hosp said I couldn't eat anything, but I was allowed to drink juice or water. My MW actually (against the "rules") encouraged me to bring bananas, cheese sticks and some whole wheat crackers. I snacked and did not throw up. One HUGE piece of advice that I will give.....as soon as you deliver make sure someone has a GOOD meal for you. Eggs, meat, something really rich in protien. I was asking and asking for real food after ds was born and no one got me any and finally (3 hrs later in my regular room) I started shaking and having palpitations and basically had a panic attack (probably from low blood sugar) and dh was able to scavange some sort of turkey sandwich for me.
Happy Mommy to one amazing girl (11y) and one sweet boy (7y), and wife to DH since 7/03 : :