Who asked you to change your password. Was it definately Lycos or was it maybe a scam and now someone else is using your account.
Nobody will be able to send you your password as it is probably held in an encrypted format so nobody (even from Lycos) can find out what it is.
Many of these email systems have an option which says "lost your password" or similar.
See if you can find that option, and it may ask you a security question or two, then may allow you to reset your password.



