Hello - thanks for asking your question.
Please understand my limitations over the internet as I have neither met nor examined you. This information is for patient education only. Please see your personal physician for further evaluation.
There are several reasons for groin pain.
Causes can include a kidney stone, a ureteral stone, inguinal hernia, epididymitis, prostatitis, urethritis, or various forms of testicular torsion.
You mentioned testicular torsion. The onset of pain is usually sudden, and often occurs several hours after vigorous physical activity or minor testicular trauma. There may be associated nausea and vomiting.
There is also possibility of torsion of the appendix testis. This can then produce testicular pain that ranges from mild to severe. Its onset is usually more gradual than with testicular torsion; it is not uncommon for patients to have several days of scrotal discomfort from appendiceal torsion before they present for evaluation.
I would obtain a urinalysis to evaluate for any blood or infection (for possible kidney stones or urethritis/prostatitis/epididymitis). Tests for STDs (chlamydia and gonorrhea) should be performed. A scrotal ultrasound is a reasonable diagnostic step. If all tests are negative, you may want to be evaluated by a surgeon for a possible inguinal hernia. Tests for a kidney or ureteral stone (either ultrasound or CT scan) may also be considered.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.