Hello Danish, After 12th science, almost all fields are open for you. Based on 12hth science, you can go for NEET ( National Eligibility and Entrance Test for Doctor's position) which almost science student opt for.

Or you can go for BA LLB (Law), Bachelor in Pharmacy too... Best of luck

Yes.

You are eligible to sit in NEET 2018 exam so you can apply.

Good Luck!!!