Fluctaating blood sugar levels yesterday

har

I am having weird reading coz of fluctuations in blood sugar

Fasting:4

2 hrs after breakfast: 4.1

2 hours after lunch : 6.5

2 hours after dinner:9.8

Other days readings are fine but yesterday my dinner reading shot up .I ate a pastry after 3 months 😟

Should I call the doctor for this one time shoot in blood sugar