Q: I changed my Apple ID

I Recently changed my Apple ID email to my other more active email bacause I don't use the old email address anymore. Anyways I successfully changed it and everything worked out.... except that I'm still receiving email notifications on my old email. For example, sometimes I'll log onto my iCloud on my pc and it'll send a email to my old email saying that I logged onto iCloud on my pc. any way to stop this?