how much sugar a day could contribute to Diabetes II?

I really want to know the amount of sugar (consumed daily) that someone needs to get Type II Diabetes. I know the recommended is no more than 30g a day, but say a person goes to 60g a day, would he get diabetes?

Can gestational diabetes contribute to fatigue and moodiness?

I just found out I have gestational diabetes. This is my 3rd pregnancy, but the first time that I’ve had this. I have been a lot more tired and irritated during this pregnancy than the others. Could the gestational diabetes have anything to do with that?