We went up from $20B overall market cap to $110B in market cap. Giving back a large chunk of that gain is highly possible so I wouldn't bet on the bottom being in just yet. Of course no one can really call the bottom. All we can do is either Hold and buy more coins the prices become more attractive or Sell if we think there will be a better opportunity tomorrow.
At the end of the day if you're in this for the long haul these price dips shouldn't be a concern as it's not the first time it's happened. In fact we have seen Three such major downward movements over the past 1 full year post every major upwards movement.
Just gotta chill and head outside for a while until things steady again :)