Picasa Web Albums - Help!

So I went to do a post today and I was told my Picasa web album is full and I have to purchase more storage ummmm what? I didnt know I had a Picasa web album for starters and I cant even go in and delete photos to make room for more as it will delete them off my blog :( Has anyone also come across this? Do you have to pay for your space for pictures on your blog? Any help or info would be appreciated!