Could this be a stricture? for a month now after cycling my urethra feels irritated/sore it has gotten abit better more bearable now but sometimes weak stream sometimes normal im seeing a urologist soon but im terrified. no std or sti no infection?

Sometimes, cyclists can have some compression of their prostatic urethra from prolonged exposure to the bicycle seat. Doubt that it's std, but see your urologist to confirm.

It is not a stricture. Strictures take years to form. It is probably from the seat irritating your prostate area,. Stop that for a while and in the future do not use a 'banana' seat but a nice and comfortable one which does not irritate the area. See your Urologist. You will be fine- nothing to be terrified about.