Hot and cold flashes?

Am I going insane? I have been getting hot and cold flashes. Like shivering cold to the bone and then super hot to where I actually have to wipe sweat off my face.

I am 8 days late and have had 2 negative tests. My boobs are sore, headaches. I called my doc and she suggested to wait longer to test... but I am dying to know!

Thoughts?!