Not Diabetic, but not sure where else to ask, blood sugar 45min after eating?

So i am wondering, after i ate dinner just now, i was feeling tired, sleepy and lightheaded. my wife suggested i test my blood sugar to see if its normal (MIL left her kit here) I do have IBS and suspected IBS got triggered (bloating cramps and gas) BUt my BS was 110 when i tested it, i ate a high carb meal too. Could i have had a sudden drop or is where i am at normal?