Glad I could help King1234. It felt more like extreme pressure in your throat. I don't remember really feeling like I was choking, the nurse who was beside me, tried to keep my mind on breathing slowly and steady. It felt like it took maybe 10 min,,,I may be wrong, but it was quick thats for sure. Like it was already said, a biopsy make make it take a little longer. They did when I had my second one done.
LOL,,,Sharpie pen,,thats is pretty close,,,,Felt more like a baseball bat,,LOL
All kiding aside,, there is nothing to really worry about. I am sure you have a great Doctor, and it will be over before ya know it. Make sure you ask for drugs,,,might make the whole day a little better ...****
GOOD LUCK !!!