Why do i take my anger out on god please answer im really worried?

hi today i got angry bet up my sister choked her puppy spat on a picture of my dead grandmother slammed doors kicked everything around me and threw the gift my grandad left me before he died then said i don't believe in god and hes cost me everything please help what is happening i have been worrying for some time now lookin at nostradamus predictions that im the ANTICHRIST they match me please help THIS ISN'T ME.