This does not sound like stricture and I would be encouraged by the GP and Urologist both saying that all was well.
Any idea of what it could be caused by? I was tested for syphilis, hiv, hsv, chlamydia, gono, diabetes. By the research i have done it is not hpv. Not to mention yes it has been a few months but im sure atleast 1 of the 6 doctors would have caught it if it was. The meatus has looked nearly identical the past 14 months. Raised slightly swollen and looking like lips.