headset's mic broken or not ?

today i fusking sliped on my headset...stupid huh?
i tried recording with sound recorder and another program... i had to scream to hear the most quiet sound a man could ever make... then in volume i did some friggin settings i forgot which...... and well... I unmuted the microphone and it worked marvelous, i was hearing myself loud and clearly...but i was hearing myself LIVE if ya know what i mean...i was hearing me in the same time i was talking......
i dont think my mic is broken, but how do i make it work without hearing myself in the same time?