For whoever that has the title 'wife', it's a lie if they don't want to get pregnant... to have their own child... 

It's the same for Jaejoong... 

Born as a man, but have the abilities to get pregnant like a normal woman... 

His marriage was a blessed too since he was given a very caring and nice husband... 

Since his first month of marriage with Yunho, he already prayed and hoped that he can get pregnant as soon as possible...