Getting stupid and stupid...

Feel so lost recently, sometimes don't even know what am i doing or talking, after somethings stupid then i realise... at that time all people are looking me and laughing...
So confuse... Argh !! Feels like my IQ is going down and down.
Keep on thinking somethings funny and impossible...
The only reason i can give myself for thinking so much is because my horoscope...
I'm Pieces ! According to someone proficient in horoscope, Pieces love to think and full of imagination...
I quite agree about it... T_T
What is the cure of this? Help me~ am i stress myself too much?
=.= arghhh !!