There is a real possibility that you could be experiencing Carpal Tunnel Syndrome, and the adex use was just a coincidence. Your symptoms sound identical. Maybe, if you've been lifting a lot more weight than you're used to, or if you weren't really using the muscles in your hands that much before starting your cycle, and then you jumped right into lifting heavy weight, then that could of caused it.

See if you bend your hand straight down, and if it really hurts in your wrist. That could be a symptom. If your doctor says it is, he can prescribe you these special hand braces for when you sleep, that your thumb goes through, and the brace goes down your forearm to just before your elbow, and you strap it tight with Velcro straps. They keep your hands in the correct position, to help with the pain, pins and needles feeling, and help you recover. You can also purchase them from most drugstores.

In the meantime, while you sleep, try and keep your hands and forearm in a straight position, letting your thumb and fingers rest where they lay naturally, like without making a fist, or bending your wrist or fingers, and keeping your forearm, wrist, and hand, all aligned. You can also try resting your aligned arm, wrist, and hand, on top of a pillow to keep it elevated. I know that keeping my arm and hand elevated, really helped make it more bearable for me.

I developed my Carpal Tunnel Syndrome, from using a power-washer for multiple hours each day while restoring my deck, which was basically from the overuse of muscles in my arms and hands, while those muscles were at the time, basically not in use at all for years. The symptoms I was experiencing, sound identical to your symptoms! I remember at night, the pins and needles, and burning sensations in my hands was so bad!! The hand braces worked wonders.

So, seriously consider buying those hand braces. They truly work wonders. Even if you don't have Carpal Tunnel Syndrome, which I honestly feel is a very high possibility that you do, I'm sure the hand braces will still help, being you have the same symptoms. Anyway, Good Luck with everything!

As far as I know it's called paresthesia, when hormones like estrogen fluctuate it influences the central nervous system which inturn can be the reason for those sensations.