At work i have to squat to the ground to sweep up crumbs and sometimes when i stand up i get dizzy and if i go back down i get a heart palpitation?

This is a fairly: normal response to squatting. You are pooling your blood in your legs and it takes a few seconds for the blood to get back into your major circulation. In the mean time your blood pressure falls and this makes you dizzy. Palpitations are a common response to the catecholamine response your body has to do to try to get your blood pressure to come back up. Normal physiology. Wear support stockings.