Hii Akhilesh :)

Yes, you can do regular BSc course even if you are 2017 pass out student.

But, there are certain conditions.

• You have to give the affidavit mentioning the reason of not taking admission in any college for 2 years. 
• There must be deduction of some marks (depends on the criteria) from your aggregate score.

After fulfilling these, you can take admission in college. 

Feel free to ask for any query. 

Hope this helps :)