Feeling weird...

Anna
So in the last couple days I've had a headache, when I stand up my stomach gets all upside down feeling, my vision goes white and fuzzy, my ears ring and I feel so sick. This happens sometimes when I'm too hot but could it be from the extra blood in my body?
​It also happened when I was pregnant with my son but we figured out it was my wisdom teeth and I had those removed after he was born and all my bad headaches went away and the blacking out dots and stuff.