Bummer man. That's how they get your shares. I've made that mistake a lot though. Helps to be confident in your investment but I understand how that feels to see that red number getting bigger and bigger.
Look at the chart. This always happens before a catalyst. In this case it would be ASN conference with additional data, impending calcitriol approval and earning report on Nov 5th. Don't bet against this stock., I've been long since $4.51 and havent sold a single stock. This can be $15 by EOY