I understand fully your concerns with the light headed feelings. That was one of the first symptoms for me and it is very disconcerting! It feels as if your head is swimming. I have just learned to lay my head back for a brief moment and then it's usually back to normal for me. It has gotten a lot better with time.
I wish we didn't have to deal with this stuff either! I am ready to be out of peri and into menopause. Wish it would happen sooner than later!