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Dear Yvonne, I didn't ejaculate for three weeks and the color of my fluid is now yellow. Why is that so? Thank you. -Wan

Dear Wan, Changes in the color of semen can be due to a number of factors like your diet, age, and how often you ejaculate. Healthy ejaculate is typically whitish and cloudy, with colored semen indicating a possible prostate infection or sexually transmitted disease.

While the change you describe may be temporary and of no concern, it would be wisest to be medically evaluated to rule out any underlying condition. And always be sure to practice safe sex.

Do you have a question about sex? If so, foxnewshealth.com wants to hear from you! E-mail your questions to drmanny@foxnews.com

Dr. Yvonne KristAn Fulbright is a sex educator, relationship expert, columnist and founder of

Sexuality Source Inc.

She is the author of several books including, "Touch Me There! A Hands-On Guide to Your Orgasmic Hot Spots."