If you are worried you have overdosed then you need to go to the ER.
Sometimes pins and needles in the hands and/or feet is a sign of B12 deficiency
did you just do coke and if you did how much have you done ?
i dont uderstand your post. there is no "sure" sign of overdose, if you feel like you have overdosed you neeed to get off the internet and go to the E.R.