Thanks for posting your query at DoctorSpring.com
I have gone through your question in detail and I can understand what you are going through.
If its a urine test, then there is nothing to worry about. The phenteramine 37.5mg will leave your system. However if its a hair test then there is trouble as the drug stays in hair for long .
You may continue using cleanse...
Hope this helps
If you have any further query, do let me know.
Dr. Srikanth Reddy