Do check with your gynae if it's OK for you to travel. Don't think strollers are cheaper in Korea but no harm checking them out!(:
I would suggest that you can check with your gynae whether are you fit to travel before booking any tickets. Japan for sure!
Korea is more navigatable than Japan i think
If u want to buy baby stuff, go Japan
Australia for chill relax trip
very depends on individual...
Taiwan
Japan!
for me I'll go Japan 😂