Oral sex is not safe. Could be nerves. Could be an infection See your primary care doctor first and if warranted, a urologist. Get tested for all STDs. Herpes tests are not accurate unless 12 or more weeks past the act. If she didn't have sores by her mouth, she may not have it but this isn't always true. There is no HPV test for men and it takes many months to see a symptom. If this not your first un-safe oral sex, what makes you think you don't already have it? The popularity of oral sex has resulted in more people getting STDs. Educate yourself please.