Both you and your partner are low risk for having STDs and thus it is unlikely that you gave anything to one another. In addition, the azithromycin you took is likely to have cured and/or prevented infection with any typical bacterial STDs which might have been present. I think that, other than your own guilt, you have little to worry about.
If per chance you wish to be 100% sure over and above my comments, I would suggest you go to your local health department STD clinic. These sites hold confidentiality at a premium, do high quality work and inexpensive. Testing at this time will be accurate and will confirm that you do not have an STD from your encounter.
Hope this helps. EWH
No change in my answer. EWH
Hey Doctor,
Posted earlier and added to it. I think I am paranoid more than anything but I made and error earlier.. On the day of my one night stand I took 500mg of Zithromax and then followed it on Monday with 7 more 250mg pills. Total in 24 hours was 2..25 GMs of zithromax. Would you recommend follow up screening based on my whole story?
This happened on Sunday. Today is Wednesday.