Hi rosqho,
On average your BS level will peak at around one hour after a meal and after 2 hours will have dropped back to near where it started at. But that is an average, and it can be affected by many things, but particularly what kind of food you ate - was it high or low in carbs, high or low GI, did it contain sugar or fat? All of these affect how quickly the food converts into glucose and how quickly or slowly the blood sugar will be processed by your body's insulin.