You should calm down and cost average whatever you have left.
This is the worst advice in this thread.
Average down in the long run rarely make anyone money. It only take one bad event to wipe your entire capital.
It's about limiting your losses. Your assumptions are based on the "bad event" that could never happen. If you invest going on the assumption that you're going to have a bad event, then you're doing it wrong.
Besides with all the reset ups and downs that
BTCbitcoin
BTC has been going through lately, you could have made quite a bit of fiat. It's really not that hard.