In regards to the above post Singleton, it is IMPOSSIBLE to diagnose/suspect enlarged prostate with a urine test. Re-read my post. Prostate infection and prostate enlargement are two separate problems which are similar (Prostatitis in inflammation caused by bacteria, viral, or other cause shown below) and enlarged prostate could be hyperplasia or mass. The only way to really detect prostate enlargement at first is by manual rectal exam. That is why it is done. Then, if it feels enlarged, we correlate with further diagnostic studies.
As far as Bactrim goes: Yes, Singleton is correct as it can be harsh on some people, not all. As far as prostate infection, you may find bacteria in urine - but this does not necessarily show where it came from. It could be bacteria from the bladder, kidneys, or urinary tract.
The original theory about the cause of prostatitis was that it is caused by bacterial infection. Now, of course, we know that some prostatitis has nothing, or little, to do with bacteria. Exactly how important bacterial infection is in causing prostatitis is a subject of great debate on every level, from patient discussion to scientific research.
The reason there can be any controversy is because of the logic of how one tests for bacteria. Generally speaking, a negative test for bacteria just means the test did not find any. They may be there, hiding from the testing method, the wrong test may have been used, the testing method may not have been sensitive enough, or the test may not have been read properly. Also, until the advent of multiple-drug-resistant bacteria, antibiotics have been so effective that after a long course of antibiotics, many doctors presume that there cannot be any bacteria left.
On the scientific level, the causes of prostatitis are not completely understood. There is controversy among the most highly regarded experts. Keep in mind that any one patient may have more than one cause operating at the same time. Or, looked at from another point of view, prostatitis could be several different diseases which present with the same or similar sets of symptoms in different individuals.
There are three main schools of thought about the causes of prostatitis. Each of the following linked pages will soon have additional information related to the potential cause.
Bacterial infection,
Auto-immune response or disordered immune response,
Neuromuscular, tension or physical injury problem
Additional possible causes:
a uric acid disorder,
prostate stones,
a urethral stricture,
a rare tumor,
prostate cancer,
benign prostatic hyperplasia (BPH, non-cancerous growth of the prostate),
a food allergy,
a yeast infestation,
a specific yeast problem from the Genus Candida,
or a virus.
I would tend to think that you may not have prostatitis and it may just be a part of your normal ejaculation, especially if you do not ejaculate very often. Your body could be putting extra protein into your semen along with a heavy amount of sperm.
My posts are to guide you in a direction to whether you think you should see a doctor, but I do care as you see by the lengths of all my posts in trying to help or guide someone with their medical problems. I practice Vascular Medicine/Cardiac Medicine and not urology. Good luck and I hope all goes well,
PS: Karma is always welcome here.