What can make you feel light headed 24/7. have no energy and feel weak at times. sometimes i get up i get light headed worse. sometimes shaky at times?

Wide differential: Being dehydrated can definitely give you those symptoms. That can be caused by diarrhea that you list in your conditions. Poor diet, viral illness (mono), depression, anemia, deconditioning, hormone imbalance (hypothyroidism) just to name a few of fthe top of my head. These vague symptoms should be evaluated by a primary care physician.