As a newbie, I always login to check if my forum account is still intact.
Check the record of your login IPs with this link
https://bitcointalk.org/myips.phpI want to know if it's possible for my account to be hacked.
It can be hacked. Depends on how careless or careful you are with your devices and how strong or weak your account password is.
Make sure you turn on 2FA of the email you used to register your forum account. Default, your email address is hidden at your profile page, remember don't turn it on. If you turn it on, your email will become target of spams, phishing attacks, scam attacks.