Hi Toastlover ,and welcome to the forum.Please have a good read,especially in the low carb forum and you will pick up some good advice there.Start cutting down the carbs slowly ,reduce eating,bread,pasta ,rice and potatoes and all flour based products.Take it slowly,now you have decided to do this you need to be comfortable with what you are eating because this is a diet for life not for just a little while.
Do you have a blood test monitor? Test before a meal and two hours after to see the affect that meal has had on you.Keep a food diary as well and you will soon see which foods affect you the most.