This sounds like eczema, not like herpes. I recommend a consultation with a dermatologist, who can diagnose and treat you properly. I also do not think your girlfriend is allergic to your semen. Instead, I suspect her irritation comes from the friction of sex. Better lubrication may help this.
Best.
Dr. Rockoff
WHy does this sound like eczema and not herpes? What would it be like if it was herpes? Can you have eczema just in that area and it just started this year? Thanks.
The Doctor told you all you need to know. Now go to WebMD& educate yourself...