I'm 46 year old female. i've been having numbness , feeling of pins, swelling and stiffness in my fingers. i wake up all night with this. ???

Sleeping on arm?: Are you sleeping on the same side as your symptoms? Positioning during sleep can cause compression on the shoulder, arm, and/or wrist, which can possibly lead to feelings of numbness in the hands. Keep a log of these episodes and take it to your physician if the symptoms persist. http://www.nlm.nih.gov/medlineplus/ency/article/003206.htm

Repetitive work?: If you do repetitive work, such as typing, you may also be suffering from carpal tunnel syndrome. Other possibilities include nerve impingement and even metabolic causes. I think you should see your doctor for further evaluation.