Hello there, there are many options for you after your 12th with PCB. There is no lack of career options for science students. Here is a list that you can do after your 12th

1. MBBS
2. B.Pharmacy
3. BDS ( bachelor of dental surgery)
4. Bachelor of Physiotherapy
5. B Sc. Nursing
6. B.Sc. courses ( specialization of own choice)
7. B.A.M.S ( Bachelor of Ayurvedic Medicine and Surgery)
8. PHARMD

For more details you can go through the below link https://medicine.careers360.com/articles/medical-courses-after-12th

Good luck for your future..