Feel dizzy when getting up from chair/bed or when bending down. no other symptoms otherwise normal feel bit fatigued what would be the cause? thanks

Hypotension: You may be having orthostatic hypotension, a little drop in your blood pressure when you go from a sitting to a standing position. Drink lots of fluids. Consider visit with doctor to figure out if there is a primary reason for this, for example anemia or some other reason

Dizziness: you most likely have orthodontic hypotension . Drink plenty of fluids. Other possibility is that you might be anemic . Get your blood work for anemia and then seek treatment accordingly.