All coins I invsted in fell in price at the moment. But I won't sell in loss. So I think you shouldn't sell too. Keep calm and hold. I am absolutely sure that the market will grow and then you will return part of money that you invested in. And one more advice. Don't trade if you are so nervous about money.
Trading is not easy as what you think ,just take it as your learning experience,recover from losses too difficult esp. If you lost hope, if you give up then your really a losser ,accept the facts and move on, experience made us to be a better trader someday.