Phishers target Yahoo Messenger

I did a dumb thing and clicked on a link sent by someone fwho I thought was from my friend's list. All of a sudden I was bombarded with porn and then I hear "I'm looking at gay porn!" over and over and over. So I shut down my computer. When I got back online I tried to log onto my Yahoo account and now it's telling me INVALID PASSWORD. I've tried entering my info to get a new password and it tells me my info is incorrect. This is an account I've had for years, had tons of stuff stored there, lots of Yahoo photo albums too. I can't get into anything. Any ideas as to how to remedy this? I'm at a loss. Thanks!