Hi I’m a19 years old with a height of 5’6 weighing at 180 pounds. The problem i have is that i have low libido. I have been having this problem since last year. Whenever i try to have sex i can’t have an erection. It has happend 4 times now and i havent had sex since. I got my testostrone checked and it was at around 650. What should i do?