Invisalign - Just Started and Worried About Too Much

Just wanted to add some pictures of teeth before and after week one. As stated earlier I will try to update pictures after about every 3 trays or so. A quick update is that my filled teeth seem to be handling the removal of trays much better as they are not as sensative anymore, the metally taste is gone as is the soreness of my tongue and inner bottom lip. However now behind my bottom right molar where my wisdom teeth were removed, it seems that they tray is digging into my gum behind the last molar and causing some pain. If it continues over the next few days I will call my dentist and discuss with him. Also if anyone can let me know how to keep to trays clear that would be great. I have tried toothpaste and liquid clear soap with a baby toothbrush to get in all the little crevacis but any more suggestions would be appreciated.  

I am 32 years old and have never had braces before or any other correction to my teeth. I decided to do Invisalign due to crowding on both my upper and lower jaw. I have 15 top aligners and 20 bottom aligners. I just got the trays on Tuesday and am on my 2nd full day of wearing them. They are pretty tough to get out to eat and to brush my teeth and that is really my only complaint right now. I do have some worries though:

1) my tongue is starting to burn a little on the under side where it is rubbing against the aligner
2) I have a large number of fillings and when I pull my aligners out my teeth are very sensitive and shoots pain up through my gum.
3) I have a kind of metally taste when I remove the aligners

If anyone can give me any advice on what to do or how to minimize these problems it would be greatly appreciated. I will be posting before pics and pics after every 3 trays to show my progress.