Welcome to our Forum.  I'll be pleased to comment but do not want to second guess the physician who diagnosed you as having epididymitis - he/she had the advantage of being able to examine you, something that I cannot do.  Testicular pain can be caused by several things including epididymitis which is typically diagnosed based on the presence of testicular tenderness.  As you have learned, in men less than 35 (or 40 in some text) it is most often an STI while as persons get a bit older, urinary tract infections become a more important cause.  In men with STI-related epididymitis a urethra discharge is typically present although on some occasions chlamydia or gonorrhea may be present without urethral symptoms.  In your specific case, mutual masturbation and cuddling are not risky activities for acquisition of any STI, making it less likely that your infection reflects an STI.  In most persons being evaluated for epididymitis, it would be appropriate to both test for gonorrhea and chlamydia as well as to perform a urine culture to try to determine the causative bacteria.  For non-STI epididymitis, Cipro is a reasonable drug to give but it would not be the right drug for STI-related infection.  Were tests taken at the time you were diagnosed?  Is follow-up scheduled (typically epididymitis would show substantial improvement after 3 or 4 days of therapy).   EWH
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Thanks for the reply, Dr. Hook. No additional tests were taken during the visit, but they did refer me to a urologist for evaluation for prostatitis. 

Thanks for the additional information.  At this point the best thing to do is to watch for improvement on antibiotics and follow-up with the urologist, particularly if you have not improve substantially in a few days.  EWH---