>>75I get the same thing. I actually pretty severe instances of deja vu. To my understanding deja vu generally only lasts a couple seconds, to around 10. I get it for a couple minutes, and it's actually debilitating. I kept a dream journal for a while, and for every instance where I felt that I was sure I had dreamt it before, there was nothing in the journal that substantiated it. I recommend doing this if it starts to seriously affect you, actually I recommend it anyway, dream journals are interesting.
Personally I can say I've never actually had any "definitive" form of precognition, nor have I ever met anyone who can really say they are precognisant. It operates on a similar level to fortune tellers, it's possible to observe and talk to someone and make semi-accurate assumptions, depending on how good you are. All the stories where people say things like "my daughter was acting weird and felt something was wrong then it actually turned out that…." where it's an extremely vague description that turns out to be correct. Presumably, people are wrong all the time, but that isn't a very interesting story, so we only ever hear about the times when people were "correct"
Deja vu can definitely be unnerving though, luckily it's fairly simple to determine whether or not you are actually predicting events, or if you have actually experienced something before.