When i have taken a

Question

When i have taken a number of photos i have managed to download them straight to my laptop via the card reader. When i have tried using the same card in the Finepix S5600 camera the wording "card not initialized" comes on the screen. When i have put the card back into the laptop reader, i am asked if i want to format the card and if i do then i will loose all my pictures. This has happened last year and i did loose all of my pictures stored on the card when i formatted it. I dont want this to happen again. Can you elp?