blood where it shouldnt be

I am a sexual active 19y/o male.  I haven't been tested for STD's in about 4 months.  My concern is my last ejaculation not only produced the regular fluids but it was mixed with a red fluid I could only assume was blood.  What is going on here? The last time i had a sex was yesterday, she was a new partner but i used a the proper protection, i.e. a condom.  

[Kevin Pho, MD]

Hello - thanks for asking your question.

Please understand my limitations over the internet as I have neither met nor examined you. This information is for patient education only. Please see your personal physician for further evaluation.

Blood in the ejaculation is known as hematospermia.

Although alarming, the cause is in most cases benign.  They include benign and malignant disorders of the prostate gland, seminal vesicles, spermatic cord, and ejaculatory duct system; urogenital infections; metastatic cancers; and vascular disorders. However, it is often impossible to know with certainty whether these conditions are the cause of hematospermia.

The cause is unknown in a substantial proportion of patients, and the condition frequently resolves spontaneously.

A rectal examination should be performed to evaluate the prostate.  A urinalysis and urine cultures should be performed to rule out any infection.  If your physician needs to evaluate further, an ultrasound can be performed to evaluate for any structural abnormalities.

Followup with your personal physician is essential.

This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.

Thanks,
Kevin, M.D.