flowers&fruits,
Yup, some bosses really cannot understand i guess.. but no harm giving it a try lah... when u mentioned "family planning", i guess more or less they will get it...? If they still dun get it, then tell them you're planning for a bb, and you're going through some fertility treatment (straight in their face).. and you think its a sensitive issue and you dun wish to elaborate further. If bosses want to know, ask them check with your gynae!
Thats what I told my boss... shes a fresh uni grad who might not understand, but heck lah, I just told her directly. I told her, to me, this job comes second to my family planning. Up to her whether she supports anot haha....