on the 13th. and it was negative. (it was 61 days. I wanted reassurance. I will test again in 3 months.) It was a pack that said take these 2 tablets as your fist dose azithromycin and then take 1 tablet each day for the next 4 days. or should I get tested again? Because the azithromycin effected the test. Would it cause antibodys not to produce within those days?