I am a 23 year old male,I had doxycycline for the threatment of chlamydia .It worked but i had in a relationship with the same partner after my threatment even after i have protected i started to feel lower pain and got my second doxycycline but couldn't use it on the proper time schedules. As the last one i got azithromycin but my father said during my childhood, that antibiotic didn't work on me for the threatment. My question what would be the best antibiotic to threat chlamydia if i needed to?