Hey Vin,
A stricture is narrowing with scar tissue. Of course it has to start at some point, but mine got progressively worse over years, not days. Based on how inflamed my bladder was when I had the cystoscopy for that stricture problem, there's no question that bladder inflammation played a major role in my symtpoms, even though the underlying problem was the stricture. You probably also have inflammation, but from your treatment. I suppose you could have some inflammation in the urethra as well, but it's equally possible that, since it hurts to pee, you're holding back and that's what's making your stream narrower.
Bottom line Vin. Don't drive yourself crazy. If you're that uncomfortable, call your urologist. The support group is great, but if you need symptom relief and medical reassurance that applies to you, your doctor should provide you answers.
But hey, I'm just saying that because I think calling your doctor is in your best interest. Please feel free to ask me and everyone else anything you like.