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First, you need to stop marijuana use, as it is not the treatment of anxiety
. Usually people who use it for anxiety become addicted to it. You may need long term treatment for anxiety.
Your lower back pain
and discharge may be due to infection. It is better to get yourself evaluated and receive treatment from physician.
I hope this information has been both informative and helpful for you.
Wish you Good Health.
Dr. Ashish Mittal