Missing pictures

Hi, I'm hoping somebody can help me find my pictures on a memory card that says "empty card". I took about two hundred pictures on my camera and it had gotten wet and the camera wasn't working, so I pulled out the memory card. About a week later I put the memory card in my phone (samsung galaxy s2) to see if I could see the pictures and I could, so I plugged my phone into my computer to transfer pictures, but the camera folder on the screen (start skewing itself, kind of tweeking the folder icon sideways, hard to explain) deleting the pictures. Watched the memory number decrease until there was no more pictures in camera folder. Now no memory card reader can find pictures. I have not used the memory card since then in hopes to someday find a way to retrieve pictures.