Every Morning Around The Same Time, After I Am Up

Every morning around the same time, after I am up and moving making breakfast, my legs feel a little weak and as if there is a dip I get off balance, lightheaded as I move from side to side in my kitchen making my husband breakfast who had a stroke two years ago. I have had my ears checked, I had my blood pressure and sugar checked...All is good..I am 64 female, soon to be 65... Could it be estrogen level is low...What could be dipping at the same time each day?