At 7pm the evening before last I drank a bottle of magnesium citrate for constipation. It did its job, but even at bedtime last night I still had a terrible pain in my abdomen. Today, the pain was much better, and I have been able to eat more normally. I ve had only one bowel movement today which was this morning that was still quire watery with only a few very small floating stools. After eating the evening meal, I have a burning sensation in my stomach or abdomen. Also, I ve been quite inwardly jittery yesterday and today which is something I ve never experienced before. I m also feeling weaker than normal.