Well seems like you were a bit to early with your investments if you have really bought yesterday, but of course that is easy to say now. I also have no idea, if we are now close to the bottom or if we will still go way lower than where we are now. I mean it is definitely possible, that Bitcoin goes to 20000 $ and Ethereum to 1500 $ each. Smaller altcoins would go down even harter then. I have some USDN laying around but sadly it's price is also way off it's peg price of 1 Dollar at the moment.