Sometimes after nearly 5 minutes of urinating' can one drop which comes out after 5 minutes be urine only or it can be semen also or any other fluid.w?

Here are some ...: What you've experienced is common in men at various degree along their life and may worsen as they age. For those with good continual urine flow and an emptying bladder with no UTI, do urethral milking by swiping the urethra from the area behind the sac outward to the end of penis for 2-4 times until the "last" drops before zipping-up. If not, seek pro-evaluation & counseling.