STD/verecocele. About this problems!

Hello sir, My age 27 (male). At the age of 13 I have a regula habit of sperm ejaculation sir. I use to ejaculate my sperm to press my penis and testicles to my bed and after some time sperm will be released sir at this stating time i enjoyed it sir daily 3 times I use to do this sir ... After some years passing at the age of 20 I got a serious pain in my penis sir and some blood also came out , I dint noticed it in my home because of fear after some days the pain is gone sir I dint consulted any doctor also . After that daily my satisfaction of ejaculation period Thrill I lost sir. And next problem is in case i stand for 20 minute's more my left leg will pain seriously sir and at that time my left TESTECLE also feels like burning , and I have a girlfriend whenever we participate in sex she got serious problem of itching in her vagina its called STD problem I think. So sir please give me any solution about this problems thank you sir.