Hello from JA
There are a number of possibilities here
Infection, either of the urethra, bladder or prostate ....
Prostate inflammation without infection.
STD if you are sexually active.
Regardless of the cause, you need an exam right now.
A urologist is the type of doctor that should do this at this point, as the prostate exam will be superior and he/she can do an ultrasound in the office if needed.
If the diagnosis is not clear, sometimes a scope of the urethra and bladder is needed.
Now, sometimes a drop or 2 after you ruinate, with no other symptoms, turns out to be nothing, maybe a bit of spasm in the bladder outlet...so would be inconsequential.
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