Cindy,
Welcome to the forums, you have found a great place for information, the people here are always ready to help and support.
The early days can be overwhelming and feeling down, annoyed etc are all normal emotions. But please believe that things will get better and that this is not the end of the world. Metformin can take some time to really kick in but you can help it by, as Jan said, watching your carbohydrates.
You will feel so much better when you have your sugars under control and you will get them under control. I was diagnosed last November and now feel better than I have in YEARS.
I would recommend you check out a book "The First Year

ype 2 Diabetes by Gretchen Becker" it is very informative and easy to read.
Testing is one of your most important tools as it is through testing that you will learn which foods work for you. As Jan says, test two hours after your first bite of food, this will tell you how the food you ate impacted on your levels. What are your numbers right now? Many of us aim to have a Fasting Blood Glucose (FBG) of 110 or less and have a Post Prandial (2 hours after first bite) of 140 or less.
Personally I avoid things like pasta, rice, white bread and potatoes as I don't tolerate them well and the are full of carbs. I have heard that Dreamfields low carb pasta works for people.
Visit and post often, never hesitate to ask a question, thats how we learn and test, test, test