Twice this month I saw bitcoin price index dive by more or less $30. Should I worry?
Only if you cant afford to lose in the short term , Medium to long term hold. can see price volatility for the next two to three years still early beta.
price goes up an down all the time.
But it is dropping more then going up..
In the last 2-3 months, yes, in any other time frame at all, no, not at all. Generally one should look at more than 10% of the history of something before deciding its overall tendencies
Look at the weekly and daily time frame. We are still in a down trend. We have been in a down trend for (going on) 9 months now. That is nothing to sneeze at.