Just a warning: don't pay for any program that is advertised here unless you know from its trial mode that it works.
Do I understand correctly that you had this card for 6 months already, and never made a backup? Then we repeat the old maxim: "You only lose what you don't backup."
I bought the Panasonic HPX250 camcorder this spring. A P2 card was formated recently by mistake and we lost all the files on it. I downloaded a software that promises to recover the lost files (byClouder.com - P2 card data recovry). I managed to get some files from the formated P2 card but the file structure is completely gone and I could not get the .txt file that is necessary with the file structure. I manage to get some .xml files, .mxf files and some .bmp files. I tried reading the files in Adobe Premiere Pro and Adobe encoder. Nothing seems to work.
Did anybody manage to get files back from a formated P2 card?