Well, we have reached that point in bitcoin history (Did you assume that you, trading here is making the story of bitcoin?), when we lost almost 25% of value in several days. We got few bad news, ban ICO, FUD tweets etc. At this point i just see two options at now,
1) Dive below 3600$ and then searching support and resistance
2) Confirmed by today, reach critical level at 3800 (psy border) and again walkin to upper levels above 4kish
I'm longing since BUY signal on this chart, this TA is common for rest of coins due to this rule:
"Bitcoin up, alts down, bitcoin down also alts down"
Stay tuned and remember to use stops ;)