BCA

Sorry, but you cannot pursue BCA. In order to pursue BCA, you need to have maths in HSC.

Hello Shivani,
Please don't regret for the course you have taken. You have selected one of the better courses in your Bachelors degree. BCA has lot of job opportunities and in many places BCA graduates are preferred over IT engineers.
In future, after completion of BCA, you can pursue either MBA or MCA. If not there are plenty of jobs available for this particular field.
All the best!

BCA is enough to get a job in the IT sectors/field. BCA is an IT-based professional course. It has everything which is needed by the IT sector and MNCs. So for getting a good job in the IT company you don't need any additional certification.

You can pursue MS in CS, IT, cyber security, hardware and networking, database administrative, etc.

You can ask your seniors to share previous year's papers and prepare for the same.

You can go for MCA. If you are interested in management, then you can go for MBA.

In India majority of IT freshers are hired through campus placement. Recently some companies have started offering Ready to Deploy Resources (RTD) to IT companies instead of companies conducting campus interviews themselves. These companies train computer graduates and supply to large companies. You may evaluate training courses of companies such as http://www.alchemysolutions.net/ to enhance your employ-ability.

Certification on database development or DBA will enhance your chances of a good job. All the best.

You can go for B.Sc as it is having a lots of career opportunities.

I will suggest you to pursue B.Sc. in CS and after that you can do Masters in the same as there are great opportunities for you.
All the best.