Safari history disappeared from specific dates

A few days ago, a really strange thing happended on my Safari that I'm not sure what to do about. I had my history opened up, then the page got reset (I think I did it, but I can't remeber) and all of my history from September 9 to the day before. Everything on my websites are fine, but it seems that by the looks of it, all of that history before October 8th has just disappeared. Anyone seen a glitch like this, and if so, is there any way to get that history back?

[Re-Titled by Moderator]

Original Title: Problem with my Safari history