Hi Melanie
I am a 29 year old TOF from Southampton and I have also been experencing the same symptoms as you. Sometime when I go to bed, I wake up in the night coughing and spluttering due to the sensation that fluid is going into my lungs. I find I only get this about once a month, or perhaps even less. I have spoken to my GP about this, but she just said that fluid wouldn’t be going into my lungs as there is a flap on the trachea that stops this. However, I did get the impression she didn’t really understand my medical history.
I have had a colon interposition which had to be repaired 6 months later since the colon part grew too quickly. The colon part now goes into the back of my stomach.
I have also had stomach adhesion’s to which need surgery to repair as my intestines kinked
Have you seen anyone about this? I have sort of put it down to a change of life style as I tend to eat quite late, but this might not be the case.
On another note, I too had a endoscope last year and the were unable to get the scope down my colon due too the bend into my stomach. Was quite frustrating at the time, however, I did get a souvenir photo of the bend 
You are quite welcome to email me if you like on .(JavaScript must be enabled to view this email address)
Mark