10 is very high.. I did the test at 24 weeks and reading was 8.4 then doctor asked me to take metformin to control the sugar level for every meal and dietician spoke to me on the daily food intake as well... Doctor just told me if I couldn't control the sugar level to below 6 for the next one month on every meal then I'll have to take insulin injection..luckily now already 37 weeks but it was really a difficult period to control every single food intake carb and sugar content..