Fasting sugar level of 190 is very high. You should get your HbA1C and fasting PP sugars done again. Diabetes in pregnancy is a delicate situation and needs to be managed very strictly. U should not conceive until your HbA1C is below 6.5 preferably below 6 and fasting is below 90 and 2 hr PP is below 120. Remember a good glycemic control is a must during first few weeks of pregnancy when the embryo is formed.