I am a 43 year female. This last monday evening after eating, I began feeling sick to my stomach. I went to bed. After waking on Tuesday, I was still sick to my stomach. I had loose bowel movements. Sharp stabbing pain in the middle of my stomach. Light headed, lower back pain, shortness of breath to some extent, feel drained. I feel full, even though I haven't eaten. Slight headache. I do not have my appendix, nor am I pregnant.