@ aifarooqi
Nothing to worry about. If anything, interviews in a way present you the best possible chance of speeding up your case to an unimaginable level. For instance, those who were interviewed during the last week of March 2015 were told during the interview that MR will be sent to you within 2 weeks, but i myself received RPRF + Updated Info Chart + PPR1 request after only 3 days of my interview and the very next day, i also received MR. Infact, one applicant on this forum received these items after a gap of only 1 day after interview. So my sincere advice to you is to go through this entire thread in detail or at least read the experiences shared by most recently interviewed applicants (starting with my own detailed experience ;D ;D) from Page # 127 of this thread.
I have heard that CIC conducted two sessions of interviews (First one in Late February and 2nd in September) in 2013 and 2014 and i expect the same to happen this year which means you have ample time to prepare yourself. Just relax, pray to Almighty ALLAH and put in your optimal effort and In Sha ALLAH one day, you will also be sharing your interview experience with us with a great deal of pride.