I'm 33, in my 20 weeks of 2nd pregnancy and non diabetic. my sugar levels are fasting 68 ppbs 88 as per blood sugar test. any risk ? pls advice

Normal: Those are normal levels. You should be tested for gestational diabetes between 24-28 weeks.

Not formal test: Hi. While that's not a formal diagnostic test (the glucose tolerance test or modified GTT, with SERUM glucose is diagnostic), it looks very good to me, and I would have a very low (like zero) suspicion you have gestational diabetes. You could always see your gyn for a formal test if concerned. Eat healthily and exercise as tolerated. Good luck with pregnancy and delivery!