What Are Burning Urination And Pus Discharge From Penis Suggestive Of?

For the past week have been having burning pain while urinating and after a like 3 days i noticed some discharge pus on my penis opening,am circumcised. In the past 2months, have had unprotected sex with 4 different girls so i cant know from who i might have got the problem from. All 4 girls we only checked for hiv/aids and was all good.When i went to visit a doctor and explained didnt both to do any test or check anythg but instead gave me some Azudox doxy tabs and some other tabs which immediately stopped the pain that same day i had started the prescription, she sais it was gonorrhea. I used to pee like every 30mins for the first days, but for now i pee like each 3hrs which i think am gettin back to my normal ways but not so sure coz am still havin the pus discharge on my penis especially after i get up from sleep but no more pain when i pee, that totally stopped. Main concern is now the discharge its not stopping and was given jst the azudox tabs again when i visted same doctor to take for another week nothg else. He suggested if discharge continues after am done with this second dose then he suggests a culture swab or sensitivity.... dont recall well what he said. After what have gone through, am ready to stop cheating on my gf and only be faithful to her alone, coz for now dont even know from whom i might have got the infection. What could really be wrong? Thnx