After doing bachelor's in journalism and mass communication can I pursue masters in psychology?

Hello Shruti, hope all’s well!

YES, you can do psychology after doing a bachelors in journalism and mass communication. You just need to find out the universities which give admission to non-psychology students and trust me, there would be a lot of options. 

Do you want to do your masters in psychology in India or Abroad? Let me know and I shall find out the best universities for you.