Hai babe! At 22 weeks you're still dalam safe zone untuk fly, tapi memang better check with your doc la pasal airline requirements, some airlines ask for a letter saying you're fit to fly, especially if you're crossing borders. Bagus jugak mintak letter dari doc anyway just in case, takde salah, at least AA tahu you're cleared and comfortable je, plus boleh relax sikit kalau ada anything during the flight.