I am 9 weeks pregnant and developed gest. Diabetes within 2 weeks of getting pregnant. Having had problems with hypoglycemia years earlier, I knew my symptoms during pregnancy where blood sugar related and not normal pregnancy related.
I live in the burbs of chicago and for some reason it is difficult to schedule and appt. With an ob/gyns before 9-10 weeks. This I find ridiculous so I called around and insisted I be seen. My ob/gyn gave me the classic line "it's just a bad pregnancy, some women go through this". That's a bunch of crap! I know my body. I even asked if he would test me for diabetes. For some reason he didn't, but did recommend that I see my family doctor. Thank god I did. My primary doctor, who is a doctor of internal medicine, immediately knew my symptoms were diabetes related (extreme fatigue, extreme thirst, frequent urination, unusual hunger, nausea). He ordered a glucose tolerance test for me at my lab and I failed it. The hospital called my doctor with the results immediately and I was finally properly diagnosed with gestational diabetes.
My advise to you is that if you feel weak and extremely fatigued, request a glucose tolerance test. It is true that there are urinalysis trips that you can get at the pharmacy which check for glucose in your urine. However, that test can be negative while you have diabetes. It happened to me. Once the strip came back positive and the rest of the times I tested it was negative.
The good news is that in some cases -like mine- it can be treated by diet alone by avoiding bad cards like sweets, junk food, starches (potatoes, white rice), whole milk, bread and pasta. If you suspect you have it, see your doctor and immediately change your diet.
I have learned that I know my body better than any doctor. Years ago I almost died from blood clots. I was initially diagnosed with exhaustion. Good thing I didn't listen to that doctor and rushed to the emergency room and was treated for 12 day in the hospital.
Listen to your body, it doesn't lie.