Hi aspirant

hope you are doing absolutely fine

You haven't mentioned your college name. If you have taken the admission and submitted your documents such as 10 certificate, 12th certificate, etc , this means now you are officially a student of the college and pursuing your BHMS degree. You have paid your fees as well. There is  no refund for a seat already taken for government college. For private college, there may be different rule depending upon the college. This you need to check with the college but mostly its non refundable whether it is 3 months or 1 year. try to reach the college authority to learn more.

all the best

hope it helps