I really thnk you don't need to worry too much we have the strongest and strictest of sways that don't always work and then the weakest of sways that do work, so what's there to say that yours wouldn't?
I agree with ELP I live off Larabars too the fruit nut roll one I keep them in my bag or car they are so convinient.. Sometimes I'm the same where I'm constantly rushing and always try to munch before I get hungry or atleast 2hours sometimes less..
But yes do take the pregnancy test if your really not unsure and all shall be revealed!! Lol let us know xx