Do have to take premed before going the medical school?

No, you don't have to take a "premed" major to go to medical school. "Premed" is not a major, but rather a set of required courses that medical schools expect applicants to have completed. These courses typically include biology, general chemistry, organic chemistry, physics, and sometimes biochemistry. Students can pursue *any* undergraduate major while completing these premed requirements. Many students choose majors like biology, chemistry, or biochemistry, but others choose majors in humanities, social sciences, or even engineering. The key is to successfully complete the required courses with strong grades.