Hello, I have gone through your query and understand your concern. As you thing the pain in the scrotum and testicle may be due to hernia in another site. But hernia usually do not cause severe groin or testicle pain with out any strangulation. Further we have to suspect any testicular torsion, epididymitis or testicular cancer. This can be identified by simple physical examination and ultrasound abdomen and pelvis with scrotum. I suspect the metallic taste may be due to medications you are taking, as you have recent history of Hypertensive crisis. Some anti hypertensive medications are potential to cause dysguesia ( Change in taste). it can be normal with in few days. If the dysguesia persists and disgusting, then you can switch over to other anti anti hypertensives with your treating doctor advice. As you pain is severe, it is better to go right now and get examined by your treating physician and get proper treatment. Hope this helps. Please write back for further queries. Wishing you good health.