Sir,I am a 22 year student,I feel something bad in my penis ,Feels some thickness in my vain in the penis.I have small newly developed something in my penis bag,some times it may pain.And also some pain in my stomach ,i think stomach pain related to vain.After mastubation i feel more pain in my stomach and my penis balls.If this cause badly in my sex life ?? whats should i do ?? thank you..