Discomfort in abdomen area. Appreciated.

I was diagnosed with Carpal Tunnel Syndrome about 2 weeks ago, consulted an orthodontist who prescribed Nortryptomer P 75mg, Etoshine 60mg & chymoral forte. As advised by the doctor, stopped Etoshine & Chymoral forte after 6 days however Nortryptomer P continues. Since the time I have started taking this medicine I have developed slight discomfort in my genital area, I have not had proper erection since I started taking these medicines or I have had this CTS medical condition. Sometimes I have pain in penile shaft due to no known reason and it gets better automatically and I feel low and have constant fear of something wrong. I find my penis shrinking which is even more worrying for me. Any suggestions will be greatly appreciated.