what does "happy" means?

this night was really strange ..
i dreamed some really strange stuff
something about my cat, my family , a friend and the stars
but i can't remember why i was so scared..
anyway ..
this morning i was shivery and my stomach hurts
so my mother told me to stay at home today
i'm sitting in the kitchen now i try to relax a little bit while drawing some colorfull pictures
my cat is watching me and i'm listen to the radio
but i can't ignore this strange feeling in my head
i think i should try to sleep a little bit more