My period could be returning, no signs but that could be it...
I can't imagine anything bothering my DS when it comes to boob!
DD twin has always been all business on the boob - no comfort sucking, no hanging around to chat, just eat and go, so if one of them was to go on strike due to taste, she'd be the one!
I thought that might be the case with DS - but didn't want to be stereotypical :-)