Basically, if you can maintain good blood sugar control throughout the pregnancy, you have an excellent chance of having an outcome similar to that of a normal, non-diabetic woman. The days of “diabetic = huge baby” are mostly gone now, due to the advent of glucose screening, home meters, and tight control. You do still see it in women whose diabetes wasn’t screened for, or who were unable to maintain good control for whatever reason, though.
Prior to diagnosis, I had zero symptoms. I felt as healthy as I ever had. At the 26th week of pregnancy during my first pregnancy, I took the glucose screening test mentioned by lee, and failed spectacularly. The cutoff for getting sent back for the 3-hour test was 140 mg/dL. My blood sugar was 198 mg/dL. My OB was of the opinion that I didn’t even need to go to the three-hour test, because my result was so decisive.
For a week and a half, I tried to control my blood sugar using only diet and exercise. After meeting with a dietician – and here I should point out that apparently I got fabulously lucky, because my dietician was great and actually gave me good advice, unlike the dieticians seen by the great majority of other diabetics I’ve talked to – I started monitoring my carbohydrate intake. My dietary plan was 30g of carbs for breakfast, 45g for lunch, 45g for dinner, a 15g snack before bedtime, and also 15g snacks between breakfast/lunch and lunch/dinner. My fat/protein intake was not restricted, and neither was my overall caloric intake.
That was the only appointment I had with a dietician, because after that I managed well on my own. However, after a week and a half of following the diet precisely and getting a crapload of exercise, my numbers, particularly my fasting number, were still out of target range, so I started an insulin regime. My doctors were careful to make sure that I knew this wasn’t because I was a “bad diabetic”, it’s just that some people have more problems with blood glucose regulation than others, and unfortunately I am/was one of those people.
My insulin intake increased until my baby was born. He weighed 8 lb exactly, and was slightly hypoglycemic at birth (this is something that can happen with babies of diabetic mothers) but giving him a tube full of formula solved the problem quickly and he had no further problems.
With my second baby, I knew that my blood sugar numbers were already higher than target before I even tried to conceive. It’s weird because the target range for pregnancy is actually lower than the diagnostic cutoff for diabetes in non-pregnant people, so you can be running numbers that are higher than acceptable for pregnancy, but your GP will still say, “Nope, you’re not diabetic, you’re just glucose intolerant.” Anyway, I knew the real deal, so I went to the UW diabetes/pregnancy clinic for preconception counseling. They placed me on insulin immediately, to get my numbers into the target range. I conceived two months later and was followed closely throughout my pregnancy. My numbers stayed mostly in the target range, which is the best you can really hope for, and my second baby was 8lb 9oz, and had no hypoglycemia.
So really, insulin is not the big fat hairy deal a lot of people make it out to be. I had the good fortune of having medical teams during both pregnancies that are well-versed in the latest research and really knew what they were doing. I’ve heard horror stories from people who were put on calorie-restricted diets, or told they never had to check their blood sugar at home, or whatever.
Anyway, this post is already practically novel-length, so I’ll wrap up, but I’d be happy to answer any more questions about diabetes and pregnancy if anyone has questions. My first pregnancy, I had what is considered “gestational diabetes” only, but my second pregnancy was handled as though I were a true diabetic going in. I believe this is why my baby was born at full term, healthy, and at a normal weight.