most people have never heard of ngu before. it's not something you are taught about in sex ed class if you were even lucky enough to get a decent sex ed class.
ngu is pretty much an urinary tract infection in males that isn't related to gonorrhea. As Vance already said, it's not always a std related bacteria that causes it either. Not sure how long you were away from him but it can take easily a week or more until symptoms show up.
if you suspect your man is lying, be sure to cover all your std testing bases at the proper times since you have unprotected sex together. you can test for chlamydia, gonorrhea and trich any time after 1 week after you had last had sex together. syphilis after 6 weeks. herpes, hiv and hepatitis after 3 months.
grace
Whats worse, is i had never heard of ngu before this. So i was looking stupid as can be. But i am very clean. It has been 10+ years since i had got trich from my ex. But he keeps saying we had sex then it showed up. But i toldhim it couldnt of been.then cuz i didnt come back to the 4th of july. So i really dont believe. I just wanted to make sure im just not trippin.
NGU is basically bacteria, normally happens from oral sex and symptoms normally start after a couple of days.
If u came up negative and he didn't hello he obviously did something when he was away when someone has something and ur unprotectedu would have also gotten it he made up a story