I have diogonized last week with an after meal blood suger 220md/dl and been adviced by my doctor to start glucopeg 500mg. Since I feel that I am in good helth I ignore the sugeion to take medicine and went to another hospitel yesterday to check my FBS and PPBS and which was shocking !.. FBS is 126mg/dl  & PPBS is 96mg/dl !! Is it possibel that PPBS is lower than FBS and also I would like to know that my reading are sound good or do I need to start taking medicine for diabtec. Thanks in Advance. Regards
Your after meal sugar 220 mg/DL is definitely high. Next time reading is 126 is also high. Cut off value is 126. Between 100 and 126 FBS is called borderline and 126 is diabetic. It sometimes happen that pubs may be lower than fasting. However no need of starting antidiabetic medicine. First thing to do is you control your diet. And after that check it repeatedly at 15 days interval. If it remains persistent high then go for medicine. Consult your physician and take treatment accordingly.