I'm and 18 year old male with no history of urinary tract issues or anything of the sort. But around February of this year I started to have some urinary issues and when I went to the doctor they gave me meds for a UTI. I took them and nothing improved. Over the next month I had been taken back to several doctors none of which really helped me at all. I go to a urologist today and maybe he can help me but my question is: I had extreme difficulty urinating last night. I just couldn't get it to flow at all, before last night it was just frequent urination and the constant feeling of needing to go but over the weekend it's gotten worse and worse until last night I had to strain and strain to get it to come out. I'm just wondering what this could possibly be.

I think you're to young to be having prostate problems but your urologist will be the one to make that call. Have you been tested for a STD?