Talk with your doctor about adopting a diabetic diet. I don't mean 'diet' as in losing weight but rather a diet that takes into account your dietary needs.
In the meantime, replace your white pasta and white bread with whole wheat or whole grain products. If you must have bread, try Food for Life's Ezekiel bread (found in the freezer...low glycemic index and delicious!). When you go grocery shopping shop the perimeter of the store, stocking your cart full of fruits, vegetables, lean meats (chicken and fish), and low-fat dairy products. Stay out of most of the aisles - they're usually chock full of processed foods that have refined sugar, high fructose corn syrup, and other nasty things that make your blood sugar go crazy.
Just remember that carbs are not evil and they are not the enemy! Carbohydrates should be your main source of energy. Complex carbohydrates are great - they are processed more slowly in the body, which means that the sugar is released more steadily (the pancreas doesn't freak out and make too much/not enough insulin), they make you feel fuller longer, and aid in digestion. Simple and refines sugars enter the bloodstream rather violently, causing an energy rush followed by a 'low' or a 'crash', leaving you feeling hungry again. If a simple or a refined sugar isn't used immediately for energy, it will try to head to the liver to be stored as glycogen (energy to be used later). If the liver is full, then the excess sugar gets converted to fat and sits on your belly, butt, hips, and thighs...and who really wants that?
As for getting pregnant...if you are predisposed to diabetes then it is possible that, while pregnant, you could develop gestational diabetes. The pregnancy hormones can sometimes interfere with insulin, and GD can strike any pregnant woman, predisposed or not. I have never been diabetic but was diagnosed with GD. I chose to alter my lifestyle because I did not want my baby to be affected by the insulin and did not want him to be so big that it would be unhealthy for him and difficult to deliver.
Talk with your doctor, tell her or him of your desires to be pregnant, and see what you need to do now to make it happen. Good luck to you!