Ok, this might sound a little odd, and maybe I'm just being a bit odd.

My car (fiesta st) hasn't felt "right" for the last couple of days.. I'm also ill with some sort of virus at the mo, which for some reason or other has also played havoc with my back.. So that may be the real reason.. But anyways.

I have a 8 inch or so crack which has appeared at the bottom of the windscreen on the passenger side. I don't recall any stones hitting it and upon rubbing a finger over it, there is nothing other than the crack. No impact spot or anything.

I guess chassis flex could crack a window, but wouldn't this have to be quite a large amount?

Just completely miffed as to why this crack has appeared, and more so because I don't feel like the car feels right..

Any guesses?

The crack comes up from the slam panel area if that's any help.