Black spot on clit?

Hi,
I have had a tiny black spot on my clit for a few months.. I checked it today and it's getting bigger. It's scaring me. I tried to pop it in case it is a black head (probably not the best idea) and it started bleeding. It bled a lot assuming the location but the spot is gone. Anyone else had this happen to them? Could it be a blood blister or something? I'm seeing my doctor tomorrow but it's not there anymore so that's kind of embarrassing. TIA! 
Edit: it doesn't hurt, it's not itchy and it was never raised. Just kind of embedded in my skin.