Herpes testing please clear up the confusion

Hi , I don’t really wanna list all the issues I am having, most would just cloud the info I am needing .
I had sex with someone and oral and then developed some issues , she had a past of oral herpes but nothing recent . I also have a history (child) of coldsores on mouth

I wanted to rule herpes out as potential cause .
I have balanitis but after the sex I used harsh chemicals which I am sure is the main cause and killed my natural balance of bacteria etc . I also had a painful blue bit inside my urethra, but looked vein related and other posts on here who seen a urologist about this have been told it was vein related too

. I also have red meatus inflamed, and existing prostate issues,and some burning inside . had multiple STI tests all negative

so for the herpes , I had a blood test for herpes 1 and 2 igg antibodies. both came back negative. the test was about 11 months after this all started

weird thing is why didn’t my mouth cold sores show up on test that I had as a kid. is the test unreliable ? Is there more accurate testing? the painful blue bit is gone. all other symptoms still there so how can I detect this ?

I have never had weeping , crusting cold sore type sores anywhere down there .

please can some people who know a lot more about herpes and ruling it out, give me some info - at what point can I say this is not hsv . thank you for your help

anyone?