hello, i am 43 ,and i had massive masturbation in 20 s and 30 s , i have some urine problems and erection dysfunction ,i went to 3 doctors and they say i shouldn t worry about prostate cancer, my psa is 1.84, my prostate size 25 and ultrasound shows that prostate is normal , but i did simple ultrasound not rectal ultrasound, please help me, may i have prostate cancer