This happened also years ago, weeks of bearish market is really annoying but its just for me the time of consolidating for the price!
If asked should you invest well depend upon how you risk your money is it for long term or short term? If you are ready to pump it waiting for months then buy now and relax for a year .
Pumps and dumps are normal with crypto currencies. Never be at chaos looking at the situation. This is natural with each currency. And be confident before starting up with anything if you have decided to move forward. There is a genuine reason to be scared at the beginning as you are investing, still before getting into it, study the market and go through the data of last few years. This will make you sure of growth flow.
Pretty normal and some of strategic guys are earning with this bloodbath days, and the only losers for this days are those weak guys who doesn't even think that they can retrieve their money if they hold their alts. But we can't eliminate the fear feeling on them since actually the huge fall of bitcoins for now are so scary and it creates chain reaction to the alts and this thing will needed to be scan since for some other guys are treat it as shopping or hunting days for potential coins.