After A Sexual Encounter I Experienced The Typical Signs Of

After a sexual encounter i experienced the typical signs of nsu or chlamidia..i got tested and was given all clear for gonohrea and chlamidia..i was given a dose of amizolocyn for the infetion(che k spelling?) After a few days it seemed to clear up..after 5 days i masturbated and noticed on ejeculation i experienced a burning sensation...ove the next few days symtoms reapaired but slightly different...i now feel like im dribbling urine after the toilet and the shaft of my penis is burning with a slight red rash on the head..
Do i have a complication or secondary infection.
Thanks