Hello dear student !

You can go to the basic registeration page of offical site and just log in your ID in it. After this, you can see on the top the status of your registration form . If it is accepted, it is being written on the top. Just read it carefully . Also check your mails more often for any further updates and verify if the email id you have given is correct or not. Also make sure the you haven't put the mails from AIIMS in spam folder.

Hope this will help you