Hellllp!!!! Firefox has deleted all cookies and passwords and reverted to a profile that is five years old

Help!!! After using this profile to sign in here to ask a question yesterday, upon restarting Firefox today it has deleted my entire login history, cookies and all passwords. However, when I go to recover these, the only default profile I can find when I do an "about:profiles" is one that is five years old. I can literally no longer access any of the sites I use because al of the logins are gone. Help! How do I get all my data back? My life is over if I cannot access any of my business sites, emails, Paypal, Amazon accounts or anything.