Welcome to the Forum. while the statistics are all very much in your favor an leave very, very little chance that you got an STD from this encounter, the fact is, the only way to be absolutely sure that you did not get an STD is to get tested. You I so you will soon have a definitve answer. Personally I doubt that you even needed testing but let me review the reasons why I cannot give you complete assurance that you don't have an STD:
1. Most people do not have STDs, but a small proportion o.
2. Most exposures to infected partners are not transmitted with a single exposure, but it happens.
3. Your partner said she I not have STDs. Most people tell the truth but some people don't know that they have STDs.
4. Most STDs in men are symptomatic an when symptoms occur, they are continuous, not intermittent as are the symptoms you mention. Your symptoms are not suggestive of STD.
5. The antibiotics you took are less than the recommended dose for STDs but would still cure some infected persons.
Bottom line. I'd be willing to bet your STD tests will be negative. Until they are don't worry and when they are, believe the results. Take care. EWH
No change in my assessment. EWH
One other aspect that may or may not be of significance. The night before I had the first burning sensation during urination I did receive oral sex from my wife. Not sure if this matters but thought I should add it.