15 days is too short a time to expect results in a case of ocd. Usually it takes 4-6 weeks for the response to start. So please continue using the same medications. Be regular in your follow up with the psychiatrist. Ocd is a resistant disorder and you need to be patient and continue using the medicines.
Next Steps
Based on your response ur psychiatrist may add other medicines or increase the dose of present medicines. Ask for behavior therapy.
Health Tips
Practice relaxation techniques