sign-in error for yahoo

[Badbird2000]

Last night i got a sign-in error for my yahoo email. Now, the funny thing is, i don't have a link for my yahoo email. I set up a new gmail account, and i linked in my work email. I do have a yahoo account, but have switched over all my stuff to use gmail. I went in and checked, my twitter and fb are using gmail. Plus, it keeps telling me the password is incorrect for my yahoo, but it's not. How do i get this to go away?

Thanks!
Newbie...