D.W.
Are you seeing an endocrinologist? If not, demand that you see one. Too high of blood sugars can be dangerous during your pregnancy.
Almost all insulins are approved during pregnancy by the FDA. Which insulins are you taking? I'm hoping they have taught you to carb count and to make correction doses when glucose levels are too high.
If you're not seeing a Diabetes Educator, I'd highly recommend it too. The American Association of Diabetes Educators should have a tool to find one in your local area. You may also want to call your insurance - the services should be covered because of your diagnosis. Certified Diabetes Educators (CDEs) are usually either RN's, Registered Dieticians or Pharmacists by training and go through much preparation before earning their credentials.
Good luck. I spent 8 years in the world of Diabetes Treatment selling insulin and other injectible medications. I'd be happy to point you in the direction of some credible education/information sources if you need them.