What Causes Hives With Lip Swelling And Rashes After Intercourse?

Am I Allergic To My Girlfriends' Body Fluids? I'm a 47 year old man started experiencing hives after having unprotected sex with girlfriend in late 2007. Had been having sex without a condom since 2001 without hives breakout. From April 1st through April 25th I used a condom at her request due to unrelated reason and no hive were experienced. We've had unprotected sex twice since April 25th. First time my lip became swollen and second time I developed multiple red rash areas on left side of body.