There is no way the price of Bitcoin will decrease down in the market and your bitcoins in your wallet will not decrease down too, because if you look at your wallet now you will discovered that the Bitcoin your bought when the price was $43,943 and now that the price has reduced to $41,564 , it show that if you sell at this current price it will cause you loss, because the Bitcoins in your wallet has decreased when the price of Bitcoin in the market decrease. I will advice you to learn more about Bitcoin before using huge amount of money to buy Bitcoin because if you don't know some of the simple things that involved in Bitcoin investment, it can lead you into the hands of scammers that will make you to expose your personal details.