Not sure on wether travel or not. Need advice please

Hello to all of you ladies.

I’m pregnant and never had any problems so far (week 18). I’m due Oktober 8 and as I’m living in Japan, I was planning to travel to Germany (my home country) for summer.

I thought about flying late June and returning in July. My doc gave me the okay but now my mother in law started to stress about it.

What do you ladies think? Is it too much to fly that far? It’s a direct flight about 11-12 hours by myself?

I really wanted to see my family and friends one last time before birth.

An other thing that worries me, last flight back in December (wasn’t pregnant) was really terrifying for me. I had the feeling to be fainting 3 times on the flight and it freaked me out. No idea what caused it but I’m afraid it would happen again and this time I’m by myself.

Does any of you have experience taking an airplane in month 7?

TIA