I have not been feeling very good for a couple weeks. i decide to check my blood sugar. this week my bs has been 143, 137, 153. should i be concerned. blood sugar?

Fasting sugars?: If those are fasting blood sugars (nothing to eat for 12 hours) I would be quite concerned. If not you need to check a fasting sugar. Best way to do is have nothing to eat after midnight and then at 8 am check your blood sugar before you have breakfast. If sugar is elevated fasting you need to be seen and evaluated

Depends: If these results are from fasting blood glucose, you need to see your doctor for a proper test for diagnosis of diabetes.