Hi Becky welcome to the forum,we've all been there,confused ,unsure wondering what is going to happen.Then we all found this forum and it's great help and support.You are not alone here and can ask any question you like ,someone will answer it.
First your question about bread,potatoes ,pasta and rice.These are the starchy carbohydrates,these convert 100% into glucose in the body therefore affect your blood sugar levels.To start with just cut down your portion sizes of these,this will help reduce your blood sugars.If you can get a blood testing monitor from your nurse ,test before a meal and there 2 hours after to see what effect that meal has had on your blood sugars.We are all different so some foods affect some people and some don't.The aim is to get your blood sugar level below 7 and preferably lower to get good control.
Please read some of the things in the forum and don't hesitate to ask questions,it will all make sense in a while!!