When some people give their near death experience stories and talk about seeing heaven or hell do you believe it

I don't know. I was clinicall dead one time for about 15 mins. The paramedics got me back. I didn't see anything while gone.. It was like closing my eyes and then just opening them again about 10 hrs. later in thr ER. The feeling I had was just total perfect peace, the best I've ever felt in my life. A nurse I knew saw me wake up, she knew me and was sticking by me, and asked if I knew what had happened earlier today. I said no and she said you died! I wasn't freaked out but I don't know why. I just lay there feeling that perfect state of peace.