Hi @kim.isles12
Welcome to the LastPass Community.
Please clear the LastPass cache, then log out and log back in again to confirm everything looks normal.
The major browsers today have their own internal password manager. Verify that you didn't accidentally save your LastPass master password to it.
If you are still having issues with your passwords automatically changing to your master password, make sure that you dont lastpass as autofill password on your brower! Delete LastPass from your Password Manager and all your passwords will show the right passwords in the right spots!