I reported similar symptoms at my annual diabetes review.
The nurse did the usual pulse checks on my feet and then carried out a ultra sound check on my legs just to prove that the circulation through the veins was good, which it was.
She thinks the symptoms are more inclined towards sciatica as the pins, needles and numbness were evidenced in the thigh muscles. She left me to monitor it and if it worsened make an appointment with my GP. It hasn't gone either way so I'm still plodding on with it.
If it's really worrying you, then make an appointment to see your GP and let them sort it out for you.