How can I know which device has been used by my iCloud account
I have received request to access to my iCloud from unknown source since I am not familiar with technology I am not sure whether I have accept the access or not couple hours later I have changed the icloud account password , my question is the following is theres any possibility to recognize whether my account has been used by other device or not ? And is this request has been accepted or not ?
iPhone 11 Pro Max, iOS 13