Hello leahtompkins,
Changing your password was a great call.
To help secure your Apple ID you'll also want to take the additional steps below:
1. Review all the personal and security information in your account. Update any information that isn't correct or that you don’t recognize, including:
• Your name.
• Your primary Apple ID email address.* If you need to change your email address, update the features and services that you use with Apple ID, so that each one is using your updated Apple ID.
• All alternate email addresses, rescue email addresses, and phone numbers.
• The devices that are associated with your Apple ID, if you've already set up two-factor authentication.
• Security questions and answers. If you think they might be easy to guess, you should change your security questions.
2. Check with your email address* provider to make sure that you control every email address associated with your Apple ID. If you don't control the email addresses associated with the Apple ID, you should change the password for the email address or use a different email address.
3. Set up two-factor authentication for your Apple ID. This additional security feature is designed to prevent anyone from accessing your account, even if they know your password.
You can also find those steps in this resource: If you think your Apple ID has been compromised
Should you have further concerns, you'll want to reach out to Apple Support: Contact - Official Apple Support They'd be in the best position to assist further.
Take care.