I'm stressed out. If I'm pregnant, it has to be 10 weeks. My period last month was late. I took two pregnancy tests when it was one week late and two pregnancy tests when it was two weeks late and all four were negative, then I had a very heavy painful period three weeks late. This month I had light spotting for 6 days instead of a period. I had to go to the emergency room for a kidney stone this month and the pregnancy test there was also negative. I got a CT scan, and I think that if I was pregnant they would have seen something, but I cannot shake the feeling that i might be pregnant. I had not had too many symptoms up until now, but I've been feeling this fluttering/movement feeling in my lower stomach area every day, I've been having terrible mood swings for the past week, and I've had to pee a ton. Every night I feel just exhausted. If I am not pregnant, then what is happening in my body?