I am 6'1 and weigh 190 pounds I have a low sex drive and no morning erections my sex drive had diminished since age 14.Before that I was always horny and masturbated whenever I got the chance.I thought it was just puberty im now twenty and never horny and have to constantly stimulate my penis to stay hard.I recently found out I have a pituitary tumor.I want to get it removed so I can have a regular sex drive it's driving me crazy.My doctors says my hormones are normal.I also have brain fog headaches trouble thinking and concetration problems it seem like im living in a dream.Do you think my tumor is causing these problems please help