During urination, I feel a burn in my urethra. After urination, I feel like there's some liquid inside my urethra and it's building up. It's probably a drop amount of liquid and is trapped inside the urethra. Rarely and very rarely does it come out and that is if I lie down and in no other position does it come out. While it's inside the urethra, it tingles. I stroke my penis after urination to get all urine out. Is this liquid urine? Also, what is this condition? Is it an infection?