Hello

I am booked in for an endoscopy on Thursday and i am getting worried. It came with a booklet saying the procedure was safe but that there was a risk that something could be torn inside and an operation may have to take place. I am not getting sedated, i want to be fully aware of whats going on. Has anyone had this done, does it hurt. I am also worried incase they find something bad. I am having it coz i feel sick all the time and keep getting like a stitch pain on the left hand side. What do you think they are looking for?