Why can't I view all my facebook groups?

[Elle]

I can view most my groups except 4. I used to be so active in them, and now they've completely disappeared. When I search them, it doesn't show, and its not listed in my groups. I created 2 of them!! And i can't view any. When I asked my friends to add me, they say that i'm already a member and can not be added

Whats wrong? When I try to create a new group, the words:
User can not join and create groups
appear

HELP!

[abraXus]

sounds like you were removed from the groups for some reason, even if you created the group, another admin can kick you out of it and take it over... there's nothing you can do about it