This morning I woke up to pain in my second toe. It feels like a needle is stuck in my second toe. What could be causing this?
Several things could be causing this. Morton's neuroma is a condition that often causing painful burning sensations in the toes. Gout can cause the kind of needle-like pain you describe; it usually shows up first in the big toes but can effect the other toes as well. Sometimes the pain is 'idiopathic'; that is, they don't know its cause and sometimes it just goes away.
With toe and foot pain, always take a look at your footware as tight fitting shoes with poor support cause a great deal of our foot pain. Health Central has an excellent Foot Pain section; check it out here. Good luck!
Here are some tips on easing pain that you might find useful too:
What Your Feet Say About Your Health
Exercising with Yoga To Stay Centered
Using Tylenol Responsibly