Air Travel - First Trimester

A while back we had planned to go on a vacation not planning to be pregnant by the date. Well, I will be 9weeks6days when I fly out. This will be a 6 hour flight.

Will I be safe to travel?

Is there anything I should do to prepare myself for that flight ?

Anybody traveled around that time with no issues ?

Two days before we leave I will be seeing my baby for the first time and I will talk to my OBGYN about it, but I want to hear personal experiences.