Are you using a BG monitor? I'd be interested to know how useful you find it?
I'd strongly recommend using a BG monitor on a structured basis. The most useful thing it will do is give you a fairly good idea about what foods have the greatest impact on your glucose levels. Test before you eat, and then two hours later. This is NOT to see how high you go - the high point will be reached in the first hour usually. This is intended to show how well your system deals with clearing excess glucose from your blood.
Everyone's BG will rise after eating carbs - they're digested to glucose, after all. The big question is how long your glucose stays elevated , which is an indication of how efficient your insulin response is. You are looking to have your BG level back to close to statring point after two hours. Because of the inaccuracies of the metering, you shouldn't get anxious over small differences. Being within 2mmol/l of the starting point and under 8.0 is ideal for the second reading.
Rises and falls in blood glucose are perfectly normal. What you don't want is a significant rise that hangs around for hours - that shows that there were too many carbs in what you ate for your body to process.
I'd also recommend recording all your readings and what food was associated with them. I did that for around two years until I was sure I understood what the effects of foods were. Old diaries are great for this. I will still do a week or so like that every so often to check for any changes.