At 28 weeks my fasting was 92 (5.1 mmol), which is where diagnosis begins for pregnant women in Australia. It only got up to 98 (5.4) or maybe 100 (5.6) and even with 22 units of insulin and a low carb diet it hovered around 98 (5.4) in the final weeks.
I measured my 1h after meal spikes as well as 2 hour. When I once or twice slipped up and ate carbs (a meat pie once) my blood sugar spiked to around 180 (10mmol) and stayed at 144 (8 mmol) at 2h post meal. I wasn't using insulin post meal because my OB was happy with me eating low carb but when I wasn't low carb, the spikes weren't ideal.