Lately whenever i release gas i feel warm in my vagina & i don't like it and i'm afraid that this could cause urine leakage. it happens quite often i'm a virgin so this can't be due to sex. why does it happen & is urine leaked ?

If you leak the urine your underwear should be wet, the warm feeling may not be a conclusive evidence. If urine leak is confirmed, you should do exercise to strengthen pelvic floor muscles. You can google "Kegel exercises" for this practice. You are a virgin without history of pelvic surgery so other anatomic abnormality such as fistula is out of the question.

Your passing gas will not cause any damage anywhere and will not cause urine leakage. Many symptoms can occur during passage of gas- relief, embarrassment, warmths rtc. Best is to find what foods give you gas and try to eliminate them. I think you will be fine