Abu - I have done my medical 2 weeks before Brinto. We are on same Visa office, Dhaka. CHC is doing background/security checks on me. Though I am 100% clean, is there anything to worry? Have you seen this type of scenario before? BTW, my sponsor is in Canada and I used to travel to Dhaka for 1 week sometimes when I studied in Malaysia., most likely that's why they are doing background check on me.
do't worry you will got visa within week IN SHA ALLAH. after medical visa chances are so high but some time CHC see some additional cheacks so its not mean you will got rejection...hope all the best.