DEAR DOCTOR K: For the past few months, I haven't been ejaculating, even when I have an orgasm. Why not? What's wrong?
DEAR READER: It sounds like retrograde ejaculation. To explain that, we need to talk about anatomy. There is one tube, the urethra, which leads from the bladder and through the center of the penis. The urethra carries urine out of the body. Two tubes, one on each side of the urethra, lead from the seminal vesicles and open into the urethra. The seminal vesicles are tiny glands that make semen. (The prostate gland helps make semen, too). Semen is a thick fluid that helps nourish sperm. Semen really has no other purpose: It is produced onlyto help sperm.