Bladder neck obstruction

I am 30 year and Almost a year ago March 2016 I was having problem urinating. And I had few drop of sperm coming out of my penis after urine at least once a week. Later, I was diagnosed with chlamydia and my doctor gave me azithromycin (Zithromax®) onetime dose and it clear out everything. It was all well until July 2016, I had the same symptoms back again. (Sperm coming after urine, but this time more than once a week), I visit my doctor again, he run all the test and came out negative but I still have huge discomfort down there. I decided to visit other urologist and he diagnosed me with “Bladder Neck Obstruction” and prescribes me with “Cardura” and then later change to “Omnic 0.4mg”.
Now, my current complaint is that I still have discomfort on my lower stomach, testicles and inside the penis but it’s on and off and the main problem if I don’t have intercourse for 2 weeks, I felt pressure top of my penis tip and after urine I have sperm coming out until I have intercourse. After intercourse I have pain in my lower abdomen for few days. I complaint this to my doctor he said it’s normal due to my bladder neck issue.
I will appreciate if you recommend me any medication that will be give me relief, I really want to stop taking Omnic.