I'm 5 weeks pregnant and begun monitoring my blood sugar levels like a hawk with baby 3. Knowing this time I'm more likely to have gd as I'm 37 regardless and I had it once already so I know what to do. I test fasting of course that's been 108, 109, and 110 the last 3 mornings. I test before AND after meals. Knowing your premeal levels help you keep an eye on carbs better during the meal and helps with after meal levels, and I check before bed. If my blood sugar is below 125 but above 110 I will only drink water if I'm feeling a bit hungry or munchy. Hope this helps. I was on fast acting insulin with my second son.