Hello and thankyou for approaching DoctorSpring with your query.
I have gone through your case and I understand your concern.
From what you have described it is probable that you have a urinary tract infection. Your symptoms of burning sensation, increased frequency, and the sharp pain on the left lower abdomen are mostly likely due to a urinary tract infection.
Since you have no ulcers or any other symptoms, it is very unlikely you have manifestations of herpes right now. But 50% of the population already have antibodies to HSV, as they are exposed to it during some time of their life as it is so common.
Herpes can present as painful urination (especially primary infection). So you do stand a risk. But you had good response to Antibiotic which says the Urinary Tract infection was probably bacterial. Your HSV test can come positive, due to a subclinical (infection with no symptoms) infection that you had earlier. But presently you have no symptoms of HSV and I don't think you need to be worried about this.
Azithromycin should work. If the symptoms persists you will need to go for a Urine Culture and Routine examinaiton.
Since you had only 60-90 seconds of unprotected ORAL sex, it is less likely that you would have caught an STD (but no impossible)
So next course of action -
If no symptoms ,wait for HSV test
If HSV test negative - Business as usual
If HSV positive - Please let me know
If symptoms recur - Repeat Urine Routine and Culture.
I hope this has helped. Feel free to follow up.