Hello Aspirant

No, you cannot get the OBC NCL Certificate as you already said you belong to BCE Shaikh. So, this caste doesn't come under OBC NCL in Central List due to which you cannot issue an OBC NCL Certificate and avail the benefit of OBC Quota.

You can try to get admission through EWS Quota if you satisfy it's eligibility criteria. For that you will have to get an EWS certificate in time and also change your category in application form once the correction process begins. If you fail to provide an OBC NCL Certificate, you will be considered an general candidate.

You can go through the link below to get any other information regrading the CTET

https://competition.careers360.com/exams/ctet

Hope this helps