Neeks, So sad for you. It must have been real scary going thur that terrible sleepless night episode. You sound like a great sport active person. I hope your cardiac situation and GERD situation straightens out. I am glad you are seeking medical attention hoping they will find out what is wrong so you can be on the healing to get well path. I am sure that clorinated water going down the wrong way irritated you esophagus, trachea area and it may take some time to heal the tissue. Stay on a bland diet. Stay away from acid spicy foods that would cause further irritation. Good luck and keep us posted on how you are doing.