Obsessed

Ever since my husband and I decided on TTC I've been obsessing about it. It's all I think about, all I read about. My obsession tends to make my periods a week late every month therefore making me think I might be pregnant, only to get a BFN. I know that's not good for me to do, adding stress to the body (not to mention the money I'm wasting on negative pregnancy tests) so please how do you ladies keep your mind occupied?! Or am I just crazy...