Hi guys

This may sound like a really stupid question, but I have to ask, I am desperate!

I have spent at least 20 hours of the last few days writing up a science research project, at the library , when I had finished for the day I saved it onto my USB stick as usual. Tonight I put the stick into my laptop to carry on working, when I opened the file on my computer I saw the one I wanted and clicked on it to open it, it said something like 'this file already exists do you want to replace it' I clicked yes (I don't know why I did that!) and word opened up with a blank page! My bloody work has gone, I have lost it all, I cant believe it! I am so peed off about it .... is there anything I can do to get it back? As you may have already guessed I am crap with computers. I haven't a clue what I am doing, clearly!

I would be very grateful if anyone could help. Thank you.