Thank you for writing back and I am very sorry about your issues. Unfortunately, all Facebook accounts, and any online accounts, are protected by a password. The only reason why you think that you did not need or use a password ***** is that, our web browser, the program or app that you used to access Facebook, "remembered" the password ***** you were no longer asked for it each time you access your Facebook.
Now, there are 2 possible cases why you are asked for your password.
First, your account could have been hacked and the hacker changed your password. In this case, the "remembered" password ***** your web browser will not work since your actual password ***** changed already.
Second, the web browser or app could have been cleared or reset thus the remembered password ***** removed.
Do you have a computer there where you can try to recover your Facebook account? Recovery is convenient and easy when using a computer.
Please let me know so that I can help you further.