Are you planning on going to your doctor to find out what this is that you've noticed? If you've ever had sex before you could've contracted hsv2 and just didn't know it and are just now noticing the symptoms of recurrences. A blister twice in the genital area is worthwhile following up on. It's best if you can be seen while the blister is still present.
grace
that was extremely helpful. thank you so much
Herpes 1 and 2 are two separate viruses. Herpes 1 is usually contracted orally and causes common cold sores, but can also be transmitted to the genitals, most often through oral sex while a cold sore is present. Herpes 2 is most often genital and is uncommonly contracted orally. Neither virus can change into the other. The virus is actually transmitted into the skin and does not need to be in an opening such as the urethra. It usually needs to be "massaged" into the skin which is why genital herpes usually affects the head and shaft of the penis, where there is the most friction during sex.
It is possible to pass Herpes from one part of your body to the other if you were experiencing an initial outbreak. If it was a recurrent outbreak (have you had cold sores before?), then your body has built an immunity to catching the virus again in any other location, so it's extremely unlikely you could catch it somewhere else...maybe even impossible. Search the forum for "autoinoculation". This is a quote from one of Dr. Handsfield's posts:
"Autoinocuation (self infection from one body part to another) sometimes happens during initial HSV infection, but is extremely rare in chronic or recurrent herpes, if it happens at all. It isn't that the virus is fragile; it is because the immune system prevents new infections with the same virus strain. For the same reason, neither you nor your partner can acquire a new HSV-1 infection from each other."