you saw two doctors and two doctors saw your toe. unfortunately i cannot. as much as i would like to comment (you didn't ask a question) i think you will need to wait until the final verdict on your diagnosis has been made. why are you or those doctors waiting? waiting for what?
sm black spot under my left big toe near the nail fold. saw 2 drs and they discussed my toe. very concerned. waiting. only had for 2-3 wks - dr said "oh boy"