I hear what you're saying that the doctor gave you the all-clear but I would choose to not go. The risk just wouldn't be worth it to me. And if something happened I wouldn't want to be in another country trying to deal with it.
Or, on an airplane over the Atlantic Ocean.
Or, giving birth in another country--no matter how good the medical care. If baby comes early, you won't be flying home after a week. Are you prepared to stay six weeks or more? It's your second child, will help be available if you need to stay longer?
OP, you would not be asking this question if you were not concerned.
1. At best, you will be quite uncomfortable on the airplane.
2. Unless you are different from most women, you will be quite exhausted when you get to your destination.
There's the possibility of long delays in an airport and on the tarmac. Then, customs, etc. This is without complications.