I experienced this through my 20s/30s. I was evaluated by a physician, and he found that I have a bony impingement at the top of my big toe joint. In lieu of injections or surgery, I stopped wearing heels and any other footwear that aggravates it - I am now pretty much symptom free in regard to the pain that you describe as "just at the end of by left big toe, very sharp almost like having a needle injected in it." You may also be experiencing an impingement (either congenital or arthritic).