Hi and welcome to HCM. Thank you for your query.
It can be found in healthy people but sometimes can be sign of some disorder. In you case it could be urinary infection or STD so first rule this out and do urine analysis and STD testing. Secondly it can be nerve damage
,compression or neuropathy or reduced blood flow in this area. You should do urogenital ultrasound
and procotlogist examination to see is there prostate
enlargement or anorectal disorders. Also do lumbar spine
xray as there can be seen nerve compression around the spine. WIsh you good health.