Is this normal ?

I prick my finger 4 times a day from fasting and 2 hours each time after I eat I already pricked my self 3 times today each time my blood sugar came out to 102 is it normal to have the same number each time? I also just ate waiting 2 hours to test my next number to see if it changes I also feel nauseous and a headache

I’m also diet controlled and not on medication