Just about every month as well. In the beginning of the 2ww I tell myself that it didn't work, I couldn't possibly be pregnant, etc., but then towards the end I convince myself I am. I start thinking about upcoming trips to see family, how far along I'd be, if it would be too early to tell. Ugh. It's terrible! That being said, AF is due on Monday, so I plan to test this weekend. My boobs are sore and feel different than most months so I'm back to convincing myself that I could be pregnant and will most likely be sorely disappointed tomorrow.