disappered images

please help me!!!!! i have a big problem!!

i have migrated to wordpress.org some months ago and everything was ok.
since yesterday i have lost most of my images (also that one on the reader), i see a question mark instead of the pictures.
and this for most post. the pictures are not there anymore.

please, could you help me??

this is my blog:

http://www.fiammisday.com/

thank you so much
simona