So you are at a department store trying on a pair of jeans. But the size you usually fit into just won’t fit around your belly and you can’t even zip them up. What’s going on here? You guessed it, premenstrual bloating. Are we having fun yet? Like a lot of women you probably have jeans in several sizes in your closet including the skinny jeans you aspire to get into, the comfy jeans you wear most of the time, and the slightly larger expandable at the waist jeans for the days when your...