maine 12th commerce se kiya hai sir aage B A ke bare me soch raha hoon
Hello,
You can definitely go ahead with your choice, there's absolutely no problem there, so many people change their stream after 12th or graduation.
You can persue course of your choice.
Further, you can apply for government exams as well such as UPSC, SSC CGL, State PSCs or banking exams such as SBI, IBPS, RBI or insurance ones like GIC, LIC,NIACL.
You can also pursue Master's Degree in relevant discipline and apply for SET/NET in order to be a lecturer, in cases of schools one needs to have BEd degree, after that you can appear for CTET or State Level TETs, to apply for various government schools such as KVS, Army, Navodaya Vidyalay, Jawahar Vidyalaya and other prestigious private schools.
You can also pursue higher studies in fields of management, law , media studies after graduation.