What Causes Penis Burning Sensations With Urinary Frequency After Intercourse?

so i slept with a woman last night, used a condom throughout the entire time. i came home because i felt dirty, and i washed myself. And as i was washing rubbed soap on the inside of my penis a few times. the next day today i feel a mild burning sensation in my penis, and im going to the rest room a little bit more than normal. what could this be?