It's going up and down, no need to worry; on the long term, the tendency is very bullish, due to the economic crisis, inflation, and the big qualities of Bitcoin.
Yep! It is normal for bitcoin to decrease in price before creating any new history. Bitcoin is showing decrease in value and I think instead of worrying about this, we should start buying bitcoin at low rates because in December you wont be able to garb bitcoin due to its high prices. If you really want your pockets full by the end of this year and make New Year eve memorable, buy bitcoin now.