I am a 17 year old girl who since Tuesday has been experiencing diarrhea, constipation, bloating, a change in bowel habits, and increased passing gas. Yesterday I had a sudden dull and achy pain on the left side of my lower abdomen and tenderness to the touch, and today I began to urinate frequently. I am starting to feel weak because of the lake of nutrients that my body is taking, but am taking vitamins as of yesterday as well as driking water to keep my energy. It is hard for me to distingush my symptoms because I ended my period today, and it began 3 days before my symptoms began. When on my period I usually experience bloating and constipation. My eating habits were terrible before I began to feel this way. I mainly took in a lot of protein and sugar.