http://www.penilepain.org
Groin pain can be due to enlarged lymph nodes, infection, muscle strain or a hernia.
I agree with the tests for STDs and HIV.
Further evaluation of the groin can be done with various imaging studies, such as an ultrasound or CT scan. A hernia or enlarged lymph nodes needs to be ruled out.
I would discuss these options with your personal physician.
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.
Kevin, M.D.
kevinmd_