(usual medical advice disclaimers, blah blah blah)
First of all, you mention that this was found out “through the urine sample”. If this wasn’t confirmed with a blood test, you’ll want to do that to establish the diagnosis. The best way to do this is to get labs done while fasting; a fasting glucose over 126 is diagnostic of diabetes. (There are other criteria, but this is the most useful one.)
Unless a patient needs to start insulin right away, I sometimes won’t overwhelm them with a glucose meter at that first visit. Sometimes patients need to get used to the diagnosis before the lancets come out. You should eventually get one, though. If you’re well-controlled on oral meds you eventually won’t have to check it more than once a day, but it will help you establish control and it’s important to know how to do it.
A number you’ll want to get familiar with is your Hemoglobin A1C (HbA1C). Without getting too technical, this is a blood test that gives us an idea of your average blood sugar over the past three months. You want it to be less than 7 (some say 6.5, but others say 7.5). You’ll want to see the doctor every three months to get this checked, but make sure it’s at least three months; if you’re short by a day or two, your insurance (assuming you have some sort of it) may not pay for it.
You should definitely see a dietician, and if there are more substantial classes available to you about eating as a diabetic, you should take them. It’s important not to think about it as “going on a diet”; you need to change the way you eat. To that end, the perfect is the enemy of the good; a pretty good diet that you can maintain over the long term is better than a perfect diet that leaves you hungry and miserable and ready to give it up after two weeks.
A food diary is a good idea. Just get a little book, and write down everything you eat, in as much detail as possible (time, amounts, etc.). Most importantly, don’t show it to anybody–not your family, not your doctor, not anybody. That just encourages you to cheat. This is for YOU. Review it often–you’ll probably see patterns emerge, and concrete improvements that can be made.
Make sure your blood pressure is under control. Over the long term, it’s at least as important as controlling your blood sugar.
Finally, now is the time to make the changes. Establishing good habits now will make it easier to keep this under control. Losing some weight may even make the diabetes essentially go away. (It doesn’t always, but it can’t hurt.) Find a good doctor who understands that now is the time to be aggressive.