Answering "Are you pregnant?"

psubride1012

H would really like to wait until we are out of the first trimester to tell people - I am kind of in the same boat.  I am going to be in mutliple social situations in the next few weeks where I am afraid that someone will look into my behavior (not drinking, not eating lunchmeat, etc.) and will point blank ask me "are you pregnant?" 

I really hate to lie, so I would rather come up with a clever answer to this question rather than just saying "no".  I am OK saying "no" to some people, like acquaintances, but I do feel bad lying to some of my close friends, especially when they know a little about our struggles.  Does anyone have any suggestions of how to answer this question?  TIA!