Hi Shivaleela, 

There is no need to worry. You can simply go to the link given here (https://cdn3.digialm.com/EForms/configuredHtml/1815/57907/login.html) and try logging in with your user-id and password. There you can access your admit card which will have the roll number written on it. Let us know if you are stuck with anything else. Keep reading about NEET 2019 Results at Careers 360 using the link given below: 

Https://medicine.careers360.com/articles/neet-result

Thanks,