Can You Really Be Allergic to Your Own Semen? By Meredith Melnick Wednesday, January 19, 2011 Gary Cornhouse / Digital Vision via Getty Images The bad news? If you exhibit flu-like symptoms immediately after ejaculation, it's possible you may be allergic to your own semen, according to a recent article by Reuters. The good news? Doctors may be able to lessen your symptoms, though treatment could..