Those levels are quite good, even being pregnant. I had a lot of highs and lows during my pregnancy, and my baby came out just fine. No problems. The only issue was she was born hypo, b/c my sugar was high with the stress of the C-section. When the mother's sugar level is high, the unborn baby goes too low.
Blood sugars rise naturally in your sleep, you might need insulin at bedtime to control them during the night. But, really, 107 is not a bad reading. I wish mine had been that good during my pregnancy! I was on two types of insulin: bedtime and daytime.
Eat a high protein snack before bed, and maybe eat dinner a little earlier.
Good Luck, and you can email me with any questions:
kls972@aim.com