Talk to Sleep Medicine Doctor on Burning Sensation

Salam, I am experiencing burning Sensation after nightfall from few weeks. It happened earlier very rarely but i have been experiencing the same now for third time. After nightfall, i urinated and i start feeling this burning sensation which i was not feeling before urination. I have to drink few glasses of water and then after urinating again, the pain goes away in about an hour. Is this a thing to worry about.