I also did not expect the pain and pressure that I am experiencing... I wish my ortho informed me about that before I decided to begin my invisalign treatments. I also didn't expect dry lips!!! I am not sure how something inside my mouth dries the outside of my lips, but this is not cool... But, I will say this, its working. It is day 3 and I already feel the difference. My bite is different (because my teeth are shifting) and eating is difficult since my bite is not normal, but it'll even out eventually. It also hurts to eat because my teeth are sore all the time and again, it is hard to bite because my bottom front teeth are coming out taller so I can't grind with my back teeth easily.
I have a question for those who do have invisalign, does everyone get a DVD of how their teeth with move with each tray? My orthodontist played a video of that for me but he did not give it to me to have.