Hello aditi.

If while selection of courses it is not showing bds and bhms, that can maybe because of two basic reasons,

1. The date for applying for bhms and bds must have been gone or maybe they have not yet started registering for that courses. 

2. Seats for applying for bhms and bds must've been full.

Just checkin after some time and if then also not available then check in after 2 daya or so. If then you're not getting it then I'm sorry to say, registration might have been closed then definately.