I bought 3 btc on credit for 19k about. What should I do? I am way underwater.
The best you can do now to your btc is to hold it. Like all people say here always careful when you buying bitcoin always buy when it's dip don't buy when it's high price because it's more chances to lose a profit when bitcoin go down the price.
Holding only seems to be simple - psychologically it is very difficult to do. meanwhile, you are not risking. You can take a risk and invest in ICO also.