How do I get into my e-mail now?

Hello, I forgot the password to my email and i went to forgot password, and the only option i have is to send a SMS message to a cell number I no longer have. How do I get into my email now. That cell number is the one that I had when I first started my email account, but I recently got a new phone number so I can't get the SMS message. That is the only option is gives me. Please help!