Is this the same issue you had as last time? If not, might wanna get that checked out mate.
That was the disappearing testicle, haha! Long story short, 6 weeks ago I had excruciating lower back pain, groin pain, and both testicles were rotating in sharp pain.. Went to my doc and he said it was probably compressed or herniated discs. It went away for a few days, then came back so I went to the ER last Thursday had an ultrasound, CT scan, urine and blood work. I have deterioration in lower discs, swollen lymph nodes and inflammation in my groin, and a hydrocele in my testicles which needs to be drained. Good times.