Flying at 29 weeks pregnant?

lindsey • Currently ttc my secound child. 25 years old from england with my partner for 12 years and have a 4year old daughter x
Ok so family have booked big holiday for everyone in july to bulgaria.I will be 29 weeks . So far weve just paid deposit.I know i can fly up to 32weeks with a letter from midwife providing i have a complication free pregnacy but i wont be insured? Question is would u risk it?We have until april when installment is due but i dont want to pay it and then hace complucations enabling me from flying and loose a fairly large amoubt of much needes money.What would you do?