Hi, first of all find out what type of herpes she has, hsv1 or 2 and is it oral or genital. If she did not have any lip sore at the time your risk for herpes from the oral sex would be close to zero but if your pubic mound area made contact with hers during the protected vaginal the risk would be a bit higher as shedding does occur more often.
Having a blister type thing inside your urethra would not be a typical area for herpes to originate.
You can have the sores swabbed or a blood test in 3 months but a blood test at 8 weeks would be a good indicator.
I would not be overly worried about this.
Okay, thank you for your reassurance. It was a one night stand and I ran away when she told me about the herpes and I don't know which one(s) she has. Just curious as to what these little blister looking things will be?
Also having herpes sores inside your urethra would be extremely painful. If your worried see the doc again.