I am a male 48. i have fire sensation during peeing. i have checked for UTI, STD everything is coming out negative. The only thing i can think of that i may have a cut inside my urethra. After i masturbated, i squeezed my penis tight to try to squeeze out the sperm. Then i went to bed. in the middle of the night, i went to go pee, and that s when i slight burning sensation started. that said, the burning sensation is about 1/2 inside my urethra. is there something i can do to help out the healing. or anything to put inside my urethra to help it heal.. Helpppp