Six days ago, I experienced severe lower back pain which made walking, sitting forward and getting up and sitting down extremely painful. Six days ago was also when I assumed pre menstrual bloating, food cravings, etc were to set in, which they also did. Menstration still hasn't occurred, but the severe lower back pain, lower abdominal congestion, cramps, bloating and fatigue remain. My breasts went through a period of soreness during all of this as well, but it has since subsided. I have ruled out pregnancy as a cause for these symptoms. I'm a 28 year old female, and am extremely concerned that something serious is going on with my reproductive/lower pelvic region. Could someone please give me insight as to which direction to take with this?