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.
did you just do coke and if you did how much have you done ?
Sometimes pins and needles in the hands and/or feet is a sign of B12 deficiency
If you are worried you have overdosed then you need to go to the ER.