Well, I set up a new yahoo account and then attempted to create a new flickr account anyways. And lo and behold when I used my email flickr gave a message that it was already in use with "******" username. AUGHH, I had been typing in the wrong username for months! So, I quickly went and tried the CORRECT username with my password and YES, it worked!
But, man, I feel bad about all those emails I sent to yahoo. :(