I just wrote something I had intended on using to enter the short story writing competition on this site. It is original. I wrote it. I only thought up the concept a few hours ago and just now finished writing it all out. Roughly just under 3,000 words. I think it's a good story. There's just one problem. I can't shake this feeling that I've either written something similar before or that I've read it by someone else before. I cannot for the life of me remember if this is the case or even whether it was me or someone else who wrote something similar. But now I have this nagging feeling of deja vu and I'm wondering whether I should even bother to submit it. There's no way for me to find out if someone did this before me or if it's my original content. I mean, what would you look for? All the short stories I've read in the last thirty odd years by a hundred authors? I wouldn't even know what to put in as search terms. It's entirely possible that this is just paranoia. But the 'what if' scenario can't help but to continue to play out in my head. The inside of my head is an extremely annoying place at times. What would you do if you were in a similar situation? Have you ever been in such a situation?