1)since your fasting glucose values are below 100 mg%,diet control should suffice.These days post-breakfast or post-lunch(2 hours after food)tests are also being given lot of importance,so try and do these tests.
2) Regarding the numbness you feel in the right hand,it may be because,as you mentioned,reduced blood flow to the right hand when you lie on your right side.Testing for your ability to recognize sensations like A)Touch,B)Vibration and C)Heat and cold,are the definitive tests to rule out peripheral neuropathy and should be done in a hospital or clinic.A Doppler study to check for circulation of blood in your limbs is also uesful.Iam writing about all these tests since you wanted definitive evidence for peripheral neuropathy
AM, re: your numbness and tingling in your hand/arm.
Perhaps this is worth further research on your part:
"Carpal tunnel syndrome is where the median nerve becomes compressed as it passes through a tunnel of bones and tendons at the wrist. It results in pins and needles or pain affecting the thumb, index and middle fingers, in addition to sensations travelling up the arm. It is often worse at night. Untreated, the condition can lead to loss of feeling and weakness in part of the hand. It also frequently occurs in those without diabetes and can be associated with other conditions. Treatment includes splinting the arm at night, which usually provides only some symptom relief, and surgery to release the trapped nerve."
I have similar sypmtoms to those listed. In my case, I believe it comes from my Nintendo addiction.