I've noticed these prostate related urinary issues myself as well, and it's quite pronounced when I use alot of ephedrine or other stimulant based substances. One thing that I've found that works great for relieving the prostate discomfort is a good beta-sistosterol product. I've tried saw palmetto, and found it to do absolutely nothing for relief of these problems whatsoever, whereas the beta sistosterol made a huge difference within days of starting on it.
The worst symptom I felt that I suspect was prostate related was a squeezing pain in my testicles after ejaculation on a M1T cycle. It was a real catch 22, as one of the best ways I've found to relieve prostate inflammation is through regular ejaculation, but when it feels like your nuts are being run over by a steam roller that kinda throws that option out the window.
I suspect I've been dealing with a mild case of prostatitis since December, but I've had to wait like 5 months to finally get in to see a urologist, coming up this week. I've had to forego any androgen use in this time until I get a clearer picture of what's going on with my urinary system/prostate gland.
As far as dealing with the burning after urination, I've found that drinking a ton of water really helps here. The burning sensation for me was much worse when urinating while dehydrated, and I suspect that a high pH urine leads to much of this discomfort. Megadosing vitamin c at about 5 grams per day has helped to alleviate any burning sensation during/after urination for myself.